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Finding the Fourth Proportional to 111,231.92, 153,513.51 and 62,835.89

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Solution

The fourth proportional to 111,231.92, 153,513.51 and 62,835.89 is: 86,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,231.92 : 153,513.51 = 62,835.89 : x
  2. Step 2: Convert to fraction form
    111,231.92/153,513.51 = 62,835.89/x
  3. Step 3: Cross multiply
    111,231.92x = 153,513.51 × 62,835.89
  4. Step 4: Simplify right side
    111,231.92x = 9,646,157,260.31
  5. Step 5: Solve for x
    x = 9,646,157,260.31/111,231.92
  6. Step 6: Final answer
    x = 86,721.13

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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.