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Finding the Fourth Proportional to 48,221.70, 72,332.55 and 13,164.90

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Solution

The fourth proportional to 48,221.70, 72,332.55 and 13,164.90 is: 19,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,221.70 : 72,332.55 = 13,164.90 : x
  2. Step 2: Convert to fraction form
    48,221.70/72,332.55 = 13,164.90/x
  3. Step 3: Cross multiply
    48,221.70x = 72,332.55 × 13,164.90
  4. Step 4: Simplify right side
    48,221.70x = 952,250,787.50
  5. Step 5: Solve for x
    x = 952,250,787.50/48,221.70
  6. Step 6: Final answer
    x = 19,747.35

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1.5x scale

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.