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Finding the Fourth Proportional to 74,957.42, 112,380.55 and 45,368.33

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Solution

The fourth proportional to 74,957.42, 112,380.55 and 45,368.33 is: 68,018.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,957.42 : 112,380.55 = 45,368.33 : x
  2. Step 2: Convert to fraction form
    74,957.42/112,380.55 = 45,368.33/x
  3. Step 3: Cross multiply
    74,957.42x = 112,380.55 × 45,368.33
  4. Step 4: Simplify right side
    74,957.42x = 5,098,517,202.66
  5. Step 5: Solve for x
    x = 5,098,517,202.66/74,957.42
  6. Step 6: Final answer
    x = 68,018.84

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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.