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Finding the Fourth Proportional to 68,972.47, 95,098.51 and 53,663.47

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Solution

The fourth proportional to 68,972.47, 95,098.51 and 53,663.47 is: 73,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,972.47 : 95,098.51 = 53,663.47 : x
  2. Step 2: Convert to fraction form
    68,972.47/95,098.51 = 53,663.47/x
  3. Step 3: Cross multiply
    68,972.47x = 95,098.51 × 53,663.47
  4. Step 4: Simplify right side
    68,972.47x = 5,103,316,038.43
  5. Step 5: Solve for x
    x = 5,103,316,038.43/68,972.47
  6. Step 6: Final answer
    x = 73,990.62

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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.