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Finding the Fourth Proportional to 98,240.80, 147,384.24 and 39,079.84

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Solution

The fourth proportional to 98,240.80, 147,384.24 and 39,079.84 is: 58,628.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,240.80 : 147,384.24 = 39,079.84 : x
  2. Step 2: Convert to fraction form
    98,240.80/147,384.24 = 39,079.84/x
  3. Step 3: Cross multiply
    98,240.80x = 147,384.24 × 39,079.84
  4. Step 4: Simplify right side
    98,240.80x = 5,759,752,517.72
  5. Step 5: Solve for x
    x = 5,759,752,517.72/98,240.80
  6. Step 6: Final answer
    x = 58,628.93

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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.