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Finding the Fourth Proportional to 469,890.20, 704,835.30 and 137,466.20

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Solution

The fourth proportional to 469,890.20, 704,835.30 and 137,466.20 is: 206,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,890.20 : 704,835.30 = 137,466.20 : x
  2. Step 2: Convert to fraction form
    469,890.20/704,835.30 = 137,466.20/x
  3. Step 3: Cross multiply
    469,890.20x = 704,835.30 × 137,466.20
  4. Step 4: Simplify right side
    469,890.20x = 96,891,030,316.86
  5. Step 5: Solve for x
    x = 96,891,030,316.86/469,890.20
  6. Step 6: Final answer
    x = 206,199.30

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Double scale
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Similar ratio
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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.