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Finding the Fourth Proportional to 65,863.70, 98,795.55 and 28,999.70

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Solution

The fourth proportional to 65,863.70, 98,795.55 and 28,999.70 is: 43,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,863.70 : 98,795.55 = 28,999.70 : x
  2. Step 2: Convert to fraction form
    65,863.70/98,795.55 = 28,999.70/x
  3. Step 3: Cross multiply
    65,863.70x = 98,795.55 × 28,999.70
  4. Step 4: Simplify right side
    65,863.70x = 2,865,041,311.34
  5. Step 5: Solve for x
    x = 2,865,041,311.34/65,863.70
  6. Step 6: Final answer
    x = 43,499.55

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Similar ratio
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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.