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Finding the Fourth Proportional to 88,824.80, 133,042.80 and 77,160.80

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Solution

The fourth proportional to 88,824.80, 133,042.80 and 77,160.80 is: 115,572.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,824.80 : 133,042.80 = 77,160.80 : x
  2. Step 2: Convert to fraction form
    88,824.80/133,042.80 = 77,160.80/x
  3. Step 3: Cross multiply
    88,824.80x = 133,042.80 × 77,160.80
  4. Step 4: Simplify right side
    88,824.80x = 10,265,688,882.24
  5. Step 5: Solve for x
    x = 10,265,688,882.24/88,824.80
  6. Step 6: Final answer
    x = 115,572.33

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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.