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Finding the Fourth Proportional to 62,670.92, 86,497.79 and 49,031.78

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Solution

The fourth proportional to 62,670.92, 86,497.79 and 49,031.78 is: 67,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,670.92 : 86,497.79 = 49,031.78 : x
  2. Step 2: Convert to fraction form
    62,670.92/86,497.79 = 49,031.78/x
  3. Step 3: Cross multiply
    62,670.92x = 86,497.79 × 49,031.78
  4. Step 4: Simplify right side
    62,670.92x = 4,241,139,932.12
  5. Step 5: Solve for x
    x = 4,241,139,932.12/62,670.92
  6. Step 6: Final answer
    x = 67,673.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.