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Finding the Fourth Proportional to 88,938.40, 133,342.80 and 36,320.80

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Solution

The fourth proportional to 88,938.40, 133,342.80 and 36,320.80 is: 54,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,938.40 : 133,342.80 = 36,320.80 : x
  2. Step 2: Convert to fraction form
    88,938.40/133,342.80 = 36,320.80/x
  3. Step 3: Cross multiply
    88,938.40x = 133,342.80 × 36,320.80
  4. Step 4: Simplify right side
    88,938.40x = 4,843,117,170.24
  5. Step 5: Solve for x
    x = 4,843,117,170.24/88,938.40
  6. Step 6: Final answer
    x = 54,454.74

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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.