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Finding the Fourth Proportional to 111,417.89, 153,754.29 and 63,013.44

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Solution

The fourth proportional to 111,417.89, 153,754.29 and 63,013.44 is: 86,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,417.89 : 153,754.29 = 63,013.44 : x
  2. Step 2: Convert to fraction form
    111,417.89/153,754.29 = 63,013.44/x
  3. Step 3: Cross multiply
    111,417.89x = 153,754.29 × 63,013.44
  4. Step 4: Simplify right side
    111,417.89x = 9,688,586,727.66
  5. Step 5: Solve for x
    x = 9,688,586,727.66/111,417.89
  6. Step 6: Final answer
    x = 86,957.19

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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.