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Finding the Fourth Proportional to 292,615.65, 438,923.49 and 82,253.61

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Solution

The fourth proportional to 292,615.65, 438,923.49 and 82,253.61 is: 123,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,615.65 : 438,923.49 = 82,253.61 : x
  2. Step 2: Convert to fraction form
    292,615.65/438,923.49 = 82,253.61/x
  3. Step 3: Cross multiply
    292,615.65x = 438,923.49 × 82,253.61
  4. Step 4: Simplify right side
    292,615.65x = 36,103,041,566.30
  5. Step 5: Solve for x
    x = 36,103,041,566.30/292,615.65
  6. Step 6: Final answer
    x = 123,380.42

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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.