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Finding the Fourth Proportional to 167,807.20, 251,710.80 and 137,087.20

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Solution

The fourth proportional to 167,807.20, 251,710.80 and 137,087.20 is: 205,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,807.20 : 251,710.80 = 137,087.20 : x
  2. Step 2: Convert to fraction form
    167,807.20/251,710.80 = 137,087.20/x
  3. Step 3: Cross multiply
    167,807.20x = 251,710.80 × 137,087.20
  4. Step 4: Simplify right side
    167,807.20x = 34,506,328,781.76
  5. Step 5: Solve for x
    x = 34,506,328,781.76/167,807.20
  6. Step 6: Final answer
    x = 205,630.80

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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.