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Finding the Fourth Proportional to 98,871.42, 136,333.23 and 63,004.62

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Solution

The fourth proportional to 98,871.42, 136,333.23 and 63,004.62 is: 86,876.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,871.42 : 136,333.23 = 63,004.62 : x
  2. Step 2: Convert to fraction form
    98,871.42/136,333.23 = 63,004.62/x
  3. Step 3: Cross multiply
    98,871.42x = 136,333.23 × 63,004.62
  4. Step 4: Simplify right side
    98,871.42x = 8,589,623,349.52
  5. Step 5: Solve for x
    x = 8,589,623,349.52/98,871.42
  6. Step 6: Final answer
    x = 86,876.71

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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.