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Finding the Fourth Proportional to 144,414.56, 216,683.40 and 74,343.08

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Solution

The fourth proportional to 144,414.56, 216,683.40 and 74,343.08 is: 111,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,414.56 : 216,683.40 = 74,343.08 : x
  2. Step 2: Convert to fraction form
    144,414.56/216,683.40 = 74,343.08/x
  3. Step 3: Cross multiply
    144,414.56x = 216,683.40 × 74,343.08
  4. Step 4: Simplify right side
    144,414.56x = 16,108,911,340.87
  5. Step 5: Solve for x
    x = 16,108,911,340.87/144,414.56
  6. Step 6: Final answer
    x = 111,546.31

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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.