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Finding the Fourth Proportional to 60,666.50, 90,999.98 and 18,546.42

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Solution

The fourth proportional to 60,666.50, 90,999.98 and 18,546.42 is: 27,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,666.50 : 90,999.98 = 18,546.42 : x
  2. Step 2: Convert to fraction form
    60,666.50/90,999.98 = 18,546.42/x
  3. Step 3: Cross multiply
    60,666.50x = 90,999.98 × 18,546.42
  4. Step 4: Simplify right side
    60,666.50x = 1,687,723,895.44
  5. Step 5: Solve for x
    x = 1,687,723,895.44/60,666.50
  6. Step 6: Final answer
    x = 27,819.70

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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.