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Finding the Fourth Proportional to 88,934.90, 133,078.35 and 65,606.90

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Solution

The fourth proportional to 88,934.90, 133,078.35 and 65,606.90 is: 98,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,934.90 : 133,078.35 = 65,606.90 : x
  2. Step 2: Convert to fraction form
    88,934.90/133,078.35 = 65,606.90/x
  3. Step 3: Cross multiply
    88,934.90x = 133,078.35 × 65,606.90
  4. Step 4: Simplify right side
    88,934.90x = 8,730,858,000.62
  5. Step 5: Solve for x
    x = 8,730,858,000.62/88,934.90
  6. Step 6: Final answer
    x = 98,171.34

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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.