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Finding the Fourth Proportional to 124,055.20, 186,082.80 and 89,063.20

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Solution

The fourth proportional to 124,055.20, 186,082.80 and 89,063.20 is: 133,594.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,055.20 : 186,082.80 = 89,063.20 : x
  2. Step 2: Convert to fraction form
    124,055.20/186,082.80 = 89,063.20/x
  3. Step 3: Cross multiply
    124,055.20x = 186,082.80 × 89,063.20
  4. Step 4: Simplify right side
    124,055.20x = 16,573,129,632.96
  5. Step 5: Solve for x
    x = 16,573,129,632.96/124,055.20
  6. Step 6: Final answer
    x = 133,594.80

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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.