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Finding the Fourth Proportional to 47,722.60, 71,656.80 and 36,641.80

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Solution

The fourth proportional to 47,722.60, 71,656.80 and 36,641.80 is: 55,018.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,722.60 : 71,656.80 = 36,641.80 : x
  2. Step 2: Convert to fraction form
    47,722.60/71,656.80 = 36,641.80/x
  3. Step 3: Cross multiply
    47,722.60x = 71,656.80 × 36,641.80
  4. Step 4: Simplify right side
    47,722.60x = 2,625,634,134.24
  5. Step 5: Solve for x
    x = 2,625,634,134.24/47,722.60
  6. Step 6: Final answer
    x = 55,018.67

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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.