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Finding the Fourth Proportional to 118,432.81, 163,437.29 and 63,984.97

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Solution

The fourth proportional to 118,432.81, 163,437.29 and 63,984.97 is: 88,299.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,432.81 : 163,437.29 = 63,984.97 : x
  2. Step 2: Convert to fraction form
    118,432.81/163,437.29 = 63,984.97/x
  3. Step 3: Cross multiply
    118,432.81x = 163,437.29 × 63,984.97
  4. Step 4: Simplify right side
    118,432.81x = 10,457,530,097.53
  5. Step 5: Solve for x
    x = 10,457,530,097.53/118,432.81
  6. Step 6: Final answer
    x = 88,299.27

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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.