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Finding the Fourth Proportional to 98,871.69, 136,442.60 and 53,549.56

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Solution

The fourth proportional to 98,871.69, 136,442.60 and 53,549.56 is: 73,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,871.69 : 136,442.60 = 53,549.56 : x
  2. Step 2: Convert to fraction form
    98,871.69/136,442.60 = 53,549.56/x
  3. Step 3: Cross multiply
    98,871.69x = 136,442.60 × 53,549.56
  4. Step 4: Simplify right side
    98,871.69x = 7,306,440,681.99
  5. Step 5: Solve for x
    x = 7,306,440,681.99/98,871.69
  6. Step 6: Final answer
    x = 73,898.21

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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.