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Finding the Fourth Proportional to 65,657.98, 98,472.57 and 18,900.70

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Solution

The fourth proportional to 65,657.98, 98,472.57 and 18,900.70 is: 28,346.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,657.98 : 98,472.57 = 18,900.70 : x
  2. Step 2: Convert to fraction form
    65,657.98/98,472.57 = 18,900.70/x
  3. Step 3: Cross multiply
    65,657.98x = 98,472.57 × 18,900.70
  4. Step 4: Simplify right side
    65,657.98x = 1,861,200,503.80
  5. Step 5: Solve for x
    x = 1,861,200,503.80/65,657.98
  6. Step 6: Final answer
    x = 28,346.90

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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.