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Finding the Fourth Proportional to 66,402.20, 91,635.02 and 36,594.20

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Solution

The fourth proportional to 66,402.20, 91,635.02 and 36,594.20 is: 50,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.20 : 91,635.02 = 36,594.20 : x
  2. Step 2: Convert to fraction form
    66,402.20/91,635.02 = 36,594.20/x
  3. Step 3: Cross multiply
    66,402.20x = 91,635.02 × 36,594.20
  4. Step 4: Simplify right side
    66,402.20x = 3,353,309,607.74
  5. Step 5: Solve for x
    x = 3,353,309,607.74/66,402.20
  6. Step 6: Final answer
    x = 50,499.98

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1.5x scale

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.