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Finding the Fourth Proportional to 74,818.64, 112,018.44 and 56,363.60

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Solution

The fourth proportional to 74,818.64, 112,018.44 and 56,363.60 is: 84,387.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,818.64 : 112,018.44 = 56,363.60 : x
  2. Step 2: Convert to fraction form
    74,818.64/112,018.44 = 56,363.60/x
  3. Step 3: Cross multiply
    74,818.64x = 112,018.44 × 56,363.60
  4. Step 4: Simplify right side
    74,818.64x = 6,313,762,544.78
  5. Step 5: Solve for x
    x = 6,313,762,544.78/74,818.64
  6. Step 6: Final answer
    x = 84,387.56

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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.