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Finding the Fourth Proportional to 194,688.80, 292,033.20 and 132,480.80

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Solution

The fourth proportional to 194,688.80, 292,033.20 and 132,480.80 is: 198,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,688.80 : 292,033.20 = 132,480.80 : x
  2. Step 2: Convert to fraction form
    194,688.80/292,033.20 = 132,480.80/x
  3. Step 3: Cross multiply
    194,688.80x = 292,033.20 × 132,480.80
  4. Step 4: Simplify right side
    194,688.80x = 38,688,791,962.56
  5. Step 5: Solve for x
    x = 38,688,791,962.56/194,688.80
  6. Step 6: Final answer
    x = 198,721.20

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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.