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Finding the Fourth Proportional to 112,468.50, 155,206.80 and 62,167.50

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Solution

The fourth proportional to 112,468.50, 155,206.80 and 62,167.50 is: 85,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.50 : 155,206.80 = 62,167.50 : x
  2. Step 2: Convert to fraction form
    112,468.50/155,206.80 = 62,167.50/x
  3. Step 3: Cross multiply
    112,468.50x = 155,206.80 × 62,167.50
  4. Step 4: Simplify right side
    112,468.50x = 9,648,818,739
  5. Step 5: Solve for x
    x = 9,648,818,739/112,468.50
  6. Step 6: Final answer
    x = 85,791.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.