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Finding the Fourth Proportional to 118,655.50, 163,703.88 and 67,631.43

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Solution

The fourth proportional to 118,655.50, 163,703.88 and 67,631.43 is: 93,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,655.50 : 163,703.88 = 67,631.43 : x
  2. Step 2: Convert to fraction form
    118,655.50/163,703.88 = 67,631.43/x
  3. Step 3: Cross multiply
    118,655.50x = 163,703.88 × 67,631.43
  4. Step 4: Simplify right side
    118,655.50x = 11,071,526,344.27
  5. Step 5: Solve for x
    x = 11,071,526,344.27/118,655.50
  6. Step 6: Final answer
    x = 93,308.16

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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.