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Finding the Fourth Proportional to 61,898.70, 85,332.93 and 43,987.17

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Solution

The fourth proportional to 61,898.70, 85,332.93 and 43,987.17 is: 60,640.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.70 : 85,332.93 = 43,987.17 : x
  2. Step 2: Convert to fraction form
    61,898.70/85,332.93 = 43,987.17/x
  3. Step 3: Cross multiply
    61,898.70x = 85,332.93 × 43,987.17
  4. Step 4: Simplify right side
    61,898.70x = 3,753,554,098.51
  5. Step 5: Solve for x
    x = 3,753,554,098.51/61,898.70
  6. Step 6: Final answer
    x = 60,640.27

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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.