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Finding the Fourth Proportional to 111,490.31, 153,864.21 and 63,092.27

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Solution

The fourth proportional to 111,490.31, 153,864.21 and 63,092.27 is: 87,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,490.31 : 153,864.21 = 63,092.27 : x
  2. Step 2: Convert to fraction form
    111,490.31/153,864.21 = 63,092.27/x
  3. Step 3: Cross multiply
    111,490.31x = 153,864.21 × 63,092.27
  4. Step 4: Simplify right side
    111,490.31x = 9,707,641,681.53
  5. Step 5: Solve for x
    x = 9,707,641,681.53/111,490.31
  6. Step 6: Final answer
    x = 87,071.62

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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.