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Finding the Fourth Proportional to 10,373.76, 15,537.78 and 8,574.39

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Solution

The fourth proportional to 10,373.76, 15,537.78 and 8,574.39 is: 12,842.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,373.76 : 15,537.78 = 8,574.39 : x
  2. Step 2: Convert to fraction form
    10,373.76/15,537.78 = 8,574.39/x
  3. Step 3: Cross multiply
    10,373.76x = 15,537.78 × 8,574.39
  4. Step 4: Simplify right side
    10,373.76x = 133,227,045.73
  5. Step 5: Solve for x
    x = 133,227,045.73/10,373.76
  6. Step 6: Final answer
    x = 12,842.69

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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.