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Finding the Fourth Proportional to 124,564.50, 171,901.44 and 74,263.50

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Solution

The fourth proportional to 124,564.50, 171,901.44 and 74,263.50 is: 102,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,564.50 : 171,901.44 = 74,263.50 : x
  2. Step 2: Convert to fraction form
    124,564.50/171,901.44 = 74,263.50/x
  3. Step 3: Cross multiply
    124,564.50x = 171,901.44 × 74,263.50
  4. Step 4: Simplify right side
    124,564.50x = 12,766,002,589.44
  5. Step 5: Solve for x
    x = 12,766,002,589.44/124,564.50
  6. Step 6: Final answer
    x = 102,485.08

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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.