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Finding the Fourth Proportional to 67,258.78, 100,769.21 and 63,258.28

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Solution

The fourth proportional to 67,258.78, 100,769.21 and 63,258.28 is: 94,775.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,258.78 : 100,769.21 = 63,258.28 : x
  2. Step 2: Convert to fraction form
    67,258.78/100,769.21 = 63,258.28/x
  3. Step 3: Cross multiply
    67,258.78x = 100,769.21 × 63,258.28
  4. Step 4: Simplify right side
    67,258.78x = 6,374,487,280.66
  5. Step 5: Solve for x
    x = 6,374,487,280.66/67,258.78
  6. Step 6: Final answer
    x = 94,775.54

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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.