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Finding the Fourth Proportional to 98,637.44, 148,032.88 and 68,861.92

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Solution

The fourth proportional to 98,637.44, 148,032.88 and 68,861.92 is: 103,346.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,637.44 : 148,032.88 = 68,861.92 : x
  2. Step 2: Convert to fraction form
    98,637.44/148,032.88 = 68,861.92/x
  3. Step 3: Cross multiply
    98,637.44x = 148,032.88 × 68,861.92
  4. Step 4: Simplify right side
    98,637.44x = 10,193,828,339.93
  5. Step 5: Solve for x
    x = 10,193,828,339.93/98,637.44
  6. Step 6: Final answer
    x = 103,346.44

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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.