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Finding the Fourth Proportional to 69,251.55, 95,728.58 and 61,772.01

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Solution

The fourth proportional to 69,251.55, 95,728.58 and 61,772.01 is: 85,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,251.55 : 95,728.58 = 61,772.01 : x
  2. Step 2: Convert to fraction form
    69,251.55/95,728.58 = 61,772.01/x
  3. Step 3: Cross multiply
    69,251.55x = 95,728.58 × 61,772.01
  4. Step 4: Simplify right side
    69,251.55x = 5,913,346,801.05
  5. Step 5: Solve for x
    x = 5,913,346,801.05/69,251.55
  6. Step 6: Final answer
    x = 85,389.38

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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.