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Finding the Fourth Proportional to 98,872.86, 136,443.85 and 53,549.80

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Solution

The fourth proportional to 98,872.86, 136,443.85 and 53,549.80 is: 73,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,872.86 : 136,443.85 = 53,549.80 : x
  2. Step 2: Convert to fraction form
    98,872.86/136,443.85 = 53,549.80/x
  3. Step 3: Cross multiply
    98,872.86x = 136,443.85 × 53,549.80
  4. Step 4: Simplify right side
    98,872.86x = 7,306,540,878.73
  5. Step 5: Solve for x
    x = 7,306,540,878.73/98,872.86
  6. Step 6: Final answer
    x = 73,898.35

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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.