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Finding the Fourth Proportional to 153,871.20, 230,839.20 and 48,700.80

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Solution

The fourth proportional to 153,871.20, 230,839.20 and 48,700.80 is: 73,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,871.20 : 230,839.20 = 48,700.80 : x
  2. Step 2: Convert to fraction form
    153,871.20/230,839.20 = 48,700.80/x
  3. Step 3: Cross multiply
    153,871.20x = 230,839.20 × 48,700.80
  4. Step 4: Simplify right side
    153,871.20x = 11,242,053,711.36
  5. Step 5: Solve for x
    x = 11,242,053,711.36/153,871.20
  6. Step 6: Final answer
    x = 73,061.45

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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.