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Finding the Fourth Proportional to 572,515.80, 858,773.70 and 198,538.80

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Solution

The fourth proportional to 572,515.80, 858,773.70 and 198,538.80 is: 297,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,515.80 : 858,773.70 = 198,538.80 : x
  2. Step 2: Convert to fraction form
    572,515.80/858,773.70 = 198,538.80/x
  3. Step 3: Cross multiply
    572,515.80x = 858,773.70 × 198,538.80
  4. Step 4: Simplify right side
    572,515.80x = 170,499,899,869.56
  5. Step 5: Solve for x
    x = 170,499,899,869.56/572,515.80
  6. Step 6: Final answer
    x = 297,808.20

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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.