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Finding the Fourth Proportional to 88,931.70, 133,397.55 and 36,378.90

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Solution

The fourth proportional to 88,931.70, 133,397.55 and 36,378.90 is: 54,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,931.70 : 133,397.55 = 36,378.90 : x
  2. Step 2: Convert to fraction form
    88,931.70/133,397.55 = 36,378.90/x
  3. Step 3: Cross multiply
    88,931.70x = 133,397.55 × 36,378.90
  4. Step 4: Simplify right side
    88,931.70x = 4,852,856,131.70
  5. Step 5: Solve for x
    x = 4,852,856,131.70/88,931.70
  6. Step 6: Final answer
    x = 54,568.35

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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.