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Finding the Fourth Proportional to 74,119.68, 111,050.19 and 61,719.48

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Solution

The fourth proportional to 74,119.68, 111,050.19 and 61,719.48 is: 92,471.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,119.68 : 111,050.19 = 61,719.48 : x
  2. Step 2: Convert to fraction form
    74,119.68/111,050.19 = 61,719.48/x
  3. Step 3: Cross multiply
    74,119.68x = 111,050.19 × 61,719.48
  4. Step 4: Simplify right side
    74,119.68x = 6,853,959,980.70
  5. Step 5: Solve for x
    x = 6,853,959,980.70/74,119.68
  6. Step 6: Final answer
    x = 92,471.53

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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.