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Finding the Fourth Proportional to 61,130.90, 91,842.15 and 54,715.70

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Solution

The fourth proportional to 61,130.90, 91,842.15 and 54,715.70 is: 82,204.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,130.90 : 91,842.15 = 54,715.70 : x
  2. Step 2: Convert to fraction form
    61,130.90/91,842.15 = 54,715.70/x
  3. Step 3: Cross multiply
    61,130.90x = 91,842.15 × 54,715.70
  4. Step 4: Simplify right side
    61,130.90x = 5,025,207,526.76
  5. Step 5: Solve for x
    x = 5,025,207,526.76/61,130.90
  6. Step 6: Final answer
    x = 82,204.05

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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.