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Finding the Fourth Proportional to 74,908.80, 112,175.28 and 67,807.80

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Solution

The fourth proportional to 74,908.80, 112,175.28 and 67,807.80 is: 101,541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,908.80 : 112,175.28 = 67,807.80 : x
  2. Step 2: Convert to fraction form
    74,908.80/112,175.28 = 67,807.80/x
  3. Step 3: Cross multiply
    74,908.80x = 112,175.28 × 67,807.80
  4. Step 4: Simplify right side
    74,908.80x = 7,606,358,951.18
  5. Step 5: Solve for x
    x = 7,606,358,951.18/74,908.80
  6. Step 6: Final answer
    x = 101,541.59

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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.