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Finding the Fourth Proportional to 61,592.10, 85,010.30 and 38,916.70

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Solution

The fourth proportional to 61,592.10, 85,010.30 and 38,916.70 is: 53,713.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,592.10 : 85,010.30 = 38,916.70 : x
  2. Step 2: Convert to fraction form
    61,592.10/85,010.30 = 38,916.70/x
  3. Step 3: Cross multiply
    61,592.10x = 85,010.30 × 38,916.70
  4. Step 4: Simplify right side
    61,592.10x = 3,308,320,342.01
  5. Step 5: Solve for x
    x = 3,308,320,342.01/61,592.10
  6. Step 6: Final answer
    x = 53,713.39

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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.