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Finding the Fourth Proportional to 116,957.32, 161,400.97 and 63,242.20

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Solution

The fourth proportional to 116,957.32, 161,400.97 and 63,242.20 is: 87,274.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,957.32 : 161,400.97 = 63,242.20 : x
  2. Step 2: Convert to fraction form
    116,957.32/161,400.97 = 63,242.20/x
  3. Step 3: Cross multiply
    116,957.32x = 161,400.97 × 63,242.20
  4. Step 4: Simplify right side
    116,957.32x = 10,207,352,424.93
  5. Step 5: Solve for x
    x = 10,207,352,424.93/116,957.32
  6. Step 6: Final answer
    x = 87,274.16

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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.