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Finding the Fourth Proportional to 71,572.20, 107,358.30 and 36,580.20

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Solution

The fourth proportional to 71,572.20, 107,358.30 and 36,580.20 is: 54,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,572.20 : 107,358.30 = 36,580.20 : x
  2. Step 2: Convert to fraction form
    71,572.20/107,358.30 = 36,580.20/x
  3. Step 3: Cross multiply
    71,572.20x = 107,358.30 × 36,580.20
  4. Step 4: Simplify right side
    71,572.20x = 3,927,188,085.66
  5. Step 5: Solve for x
    x = 3,927,188,085.66/71,572.20
  6. Step 6: Final answer
    x = 54,870.30

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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.