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Finding the Fourth Proportional to 118,071.92, 162,939.12 and 64,357.04

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Solution

The fourth proportional to 118,071.92, 162,939.12 and 64,357.04 is: 88,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,071.92 : 162,939.12 = 64,357.04 : x
  2. Step 2: Convert to fraction form
    118,071.92/162,939.12 = 64,357.04/x
  3. Step 3: Cross multiply
    118,071.92x = 162,939.12 × 64,357.04
  4. Step 4: Simplify right side
    118,071.92x = 10,486,279,463.40
  5. Step 5: Solve for x
    x = 10,486,279,463.40/118,071.92
  6. Step 6: Final answer
    x = 88,812.64

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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.