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Finding the Fourth Proportional to 124,580.64, 171,921.72 and 67,993.20

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Solution

The fourth proportional to 124,580.64, 171,921.72 and 67,993.20 is: 93,830.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,580.64 : 171,921.72 = 67,993.20 : x
  2. Step 2: Convert to fraction form
    124,580.64/171,921.72 = 67,993.20/x
  3. Step 3: Cross multiply
    124,580.64x = 171,921.72 × 67,993.20
  4. Step 4: Simplify right side
    124,580.64x = 11,689,507,892.30
  5. Step 5: Solve for x
    x = 11,689,507,892.30/124,580.64
  6. Step 6: Final answer
    x = 93,830.85

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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.