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Finding the Fourth Proportional to 98,872.70, 136,443.53 and 53,549.64

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Solution

The fourth proportional to 98,872.70, 136,443.53 and 53,549.64 is: 73,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,872.70 : 136,443.53 = 53,549.64 : x
  2. Step 2: Convert to fraction form
    98,872.70/136,443.53 = 53,549.64/x
  3. Step 3: Cross multiply
    98,872.70x = 136,443.53 × 53,549.64
  4. Step 4: Simplify right side
    98,872.70x = 7,306,501,644.08
  5. Step 5: Solve for x
    x = 7,306,501,644.08/98,872.70
  6. Step 6: Final answer
    x = 73,898.07

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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.