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Finding the Fourth Proportional to 124,013.60, 185,631.60 and 89,021.60

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Solution

The fourth proportional to 124,013.60, 185,631.60 and 89,021.60 is: 133,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,013.60 : 185,631.60 = 89,021.60 : x
  2. Step 2: Convert to fraction form
    124,013.60/185,631.60 = 89,021.60/x
  3. Step 3: Cross multiply
    124,013.60x = 185,631.60 × 89,021.60
  4. Step 4: Simplify right side
    124,013.60x = 16,525,222,042.56
  5. Step 5: Solve for x
    x = 16,525,222,042.56/124,013.60
  6. Step 6: Final answer
    x = 133,253.30

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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.