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Finding the Fourth Proportional to 543,951.78, 747,991.53 and 472,206.30

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Solution

The fourth proportional to 543,951.78, 747,991.53 and 472,206.30 is: 649,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,951.78 : 747,991.53 = 472,206.30 : x
  2. Step 2: Convert to fraction form
    543,951.78/747,991.53 = 472,206.30/x
  3. Step 3: Cross multiply
    543,951.78x = 747,991.53 × 472,206.30
  4. Step 4: Simplify right side
    543,951.78x = 353,206,312,812.64
  5. Step 5: Solve for x
    x = 353,206,312,812.64/543,951.78
  6. Step 6: Final answer
    x = 649,333.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.