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Finding the Fourth Proportional to 108,644.48, 162,500.16 and 96,721.28

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Solution

The fourth proportional to 108,644.48, 162,500.16 and 96,721.28 is: 144,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,644.48 : 162,500.16 = 96,721.28 : x
  2. Step 2: Convert to fraction form
    108,644.48/162,500.16 = 96,721.28/x
  3. Step 3: Cross multiply
    108,644.48x = 162,500.16 × 96,721.28
  4. Step 4: Simplify right side
    108,644.48x = 15,717,223,475.40
  5. Step 5: Solve for x
    x = 15,717,223,475.40/108,644.48
  6. Step 6: Final answer
    x = 144,666.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.