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Finding the Fourth Proportional to 109,276.78, 150,799.67 and 60,878.64

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Solution

The fourth proportional to 109,276.78, 150,799.67 and 60,878.64 is: 84,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,276.78 : 150,799.67 = 60,878.64 : x
  2. Step 2: Convert to fraction form
    109,276.78/150,799.67 = 60,878.64/x
  3. Step 3: Cross multiply
    109,276.78x = 150,799.67 × 60,878.64
  4. Step 4: Simplify right side
    109,276.78x = 9,180,478,897.54
  5. Step 5: Solve for x
    x = 9,180,478,897.54/109,276.78
  6. Step 6: Final answer
    x = 84,011.25

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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.