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Finding the Fourth Proportional to 98,423.64, 147,626.10 and 39,243.48

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Solution

The fourth proportional to 98,423.64, 147,626.10 and 39,243.48 is: 58,861.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,423.64 : 147,626.10 = 39,243.48 : x
  2. Step 2: Convert to fraction form
    98,423.64/147,626.10 = 39,243.48/x
  3. Step 3: Cross multiply
    98,423.64x = 147,626.10 × 39,243.48
  4. Step 4: Simplify right side
    98,423.64x = 5,793,361,902.83
  5. Step 5: Solve for x
    x = 5,793,361,902.83/98,423.64
  6. Step 6: Final answer
    x = 58,861.49

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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.