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Finding the Fourth Proportional to 53,242.88, 79,854.08 and 18,178.88

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Solution

The fourth proportional to 53,242.88, 79,854.08 and 18,178.88 is: 27,264.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,242.88 : 79,854.08 = 18,178.88 : x
  2. Step 2: Convert to fraction form
    53,242.88/79,854.08 = 18,178.88/x
  3. Step 3: Cross multiply
    53,242.88x = 79,854.08 × 18,178.88
  4. Step 4: Simplify right side
    53,242.88x = 1,451,657,737.83
  5. Step 5: Solve for x
    x = 1,451,657,737.83/53,242.88
  6. Step 6: Final answer
    x = 27,264.82

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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.