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Finding the Fourth Proportional to 839,811,000.80, 1,173,014,423.20 and 839,811,000.80

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Solution

The fourth proportional to 839,811,000.80, 1,173,014,423.20 and 839,811,000.80 is: 1,173,014,423.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,811,000.80 : 1,173,014,423.20 = 839,811,000.80 : x
  2. Step 2: Convert to fraction form
    839,811,000.80/1,173,014,423.20 = 839,811,000.80/x
  3. Step 3: Cross multiply
    839,811,000.80x = 1,173,014,423.20 × 839,811,000.80
  4. Step 4: Simplify right side
    839,811,000.80x = 985,110,416,700,426,752
  5. Step 5: Solve for x
    x = 985,110,416,700,426,752/839,811,000.80
  6. Step 6: Final answer
    x = 1,173,014,423.20

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.