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Finding the Fourth Proportional to 88,381.80, 132,572.70 and 70,885.80

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Solution

The fourth proportional to 88,381.80, 132,572.70 and 70,885.80 is: 106,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,381.80 : 132,572.70 = 70,885.80 : x
  2. Step 2: Convert to fraction form
    88,381.80/132,572.70 = 70,885.80/x
  3. Step 3: Cross multiply
    88,381.80x = 132,572.70 × 70,885.80
  4. Step 4: Simplify right side
    88,381.80x = 9,397,521,897.66
  5. Step 5: Solve for x
    x = 9,397,521,897.66/88,381.80
  6. Step 6: Final answer
    x = 106,328.70

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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.