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Finding the Fourth Proportional to 69,201.55, 103,656.52 and 56,079.55

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Solution

The fourth proportional to 69,201.55, 103,656.52 and 56,079.55 is: 84,001.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,201.55 : 103,656.52 = 56,079.55 : x
  2. Step 2: Convert to fraction form
    69,201.55/103,656.52 = 56,079.55/x
  3. Step 3: Cross multiply
    69,201.55x = 103,656.52 × 56,079.55
  4. Step 4: Simplify right side
    69,201.55x = 5,813,010,996.17
  5. Step 5: Solve for x
    x = 5,813,010,996.17/69,201.55
  6. Step 6: Final answer
    x = 84,001.17

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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.