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Finding the Fourth Proportional to 103,468.55, 155,221.05 and 36,947.30

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Solution

The fourth proportional to 103,468.55, 155,221.05 and 36,947.30 is: 55,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,468.55 : 155,221.05 = 36,947.30 : x
  2. Step 2: Convert to fraction form
    103,468.55/155,221.05 = 36,947.30/x
  3. Step 3: Cross multiply
    103,468.55x = 155,221.05 × 36,947.30
  4. Step 4: Simplify right side
    103,468.55x = 5,734,998,700.67
  5. Step 5: Solve for x
    x = 5,734,998,700.67/103,468.55
  6. Step 6: Final answer
    x = 55,427.46

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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.