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Finding the Fourth Proportional to 107,420.31, 148,244.23 and 73,499.94

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Solution

The fourth proportional to 107,420.31, 148,244.23 and 73,499.94 is: 101,432.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,420.31 : 148,244.23 = 73,499.94 : x
  2. Step 2: Convert to fraction form
    107,420.31/148,244.23 = 73,499.94/x
  3. Step 3: Cross multiply
    107,420.31x = 148,244.23 × 73,499.94
  4. Step 4: Simplify right side
    107,420.31x = 10,895,941,269.13
  5. Step 5: Solve for x
    x = 10,895,941,269.13/107,420.31
  6. Step 6: Final answer
    x = 101,432.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.