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Finding the Fourth Proportional to 292,753.83, 439,130.78 and 82,391.77

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Solution

The fourth proportional to 292,753.83, 439,130.78 and 82,391.77 is: 123,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,753.83 : 439,130.78 = 82,391.77 : x
  2. Step 2: Convert to fraction form
    292,753.83/439,130.78 = 82,391.77/x
  3. Step 3: Cross multiply
    292,753.83x = 439,130.78 × 82,391.77
  4. Step 4: Simplify right side
    292,753.83x = 36,180,762,225.68
  5. Step 5: Solve for x
    x = 36,180,762,225.68/292,753.83
  6. Step 6: Final answer
    x = 123,587.66

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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.