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Finding the Fourth Proportional to 74,843.60, 112,261.14 and 45,253.49

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Solution

The fourth proportional to 74,843.60, 112,261.14 and 45,253.49 is: 67,877.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,843.60 : 112,261.14 = 45,253.49 : x
  2. Step 2: Convert to fraction form
    74,843.60/112,261.14 = 45,253.49/x
  3. Step 3: Cross multiply
    74,843.60x = 112,261.14 × 45,253.49
  4. Step 4: Simplify right side
    74,843.60x = 5,080,207,815.07
  5. Step 5: Solve for x
    x = 5,080,207,815.07/74,843.60
  6. Step 6: Final answer
    x = 67,877.66

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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.