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Finding the Fourth Proportional to 88,933.90, 133,076.85 and 65,605.90

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Solution

The fourth proportional to 88,933.90, 133,076.85 and 65,605.90 is: 98,169.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,933.90 : 133,076.85 = 65,605.90 : x
  2. Step 2: Convert to fraction form
    88,933.90/133,076.85 = 65,605.90/x
  3. Step 3: Cross multiply
    88,933.90x = 133,076.85 × 65,605.90
  4. Step 4: Simplify right side
    88,933.90x = 8,730,626,513.42
  5. Step 5: Solve for x
    x = 8,730,626,513.42/88,933.90
  6. Step 6: Final answer
    x = 98,169.84

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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.