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Finding the Fourth Proportional to 7,689,904.80, 11,534,857.20 and 7,689,904.80

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Solution

The fourth proportional to 7,689,904.80, 11,534,857.20 and 7,689,904.80 is: 11,534,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689,904.80 : 11,534,857.20 = 7,689,904.80 : x
  2. Step 2: Convert to fraction form
    7,689,904.80/11,534,857.20 = 7,689,904.80/x
  3. Step 3: Cross multiply
    7,689,904.80x = 11,534,857.20 × 7,689,904.80
  4. Step 4: Simplify right side
    7,689,904.80x = 88,701,953,749,594.55
  5. Step 5: Solve for x
    x = 88,701,953,749,594.55/7,689,904.80
  6. Step 6: Final answer
    x = 11,534,857.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.