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Finding the Fourth Proportional to 572,361.76, 858,542.64 and 198,384.76

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Solution

The fourth proportional to 572,361.76, 858,542.64 and 198,384.76 is: 297,577.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,361.76 : 858,542.64 = 198,384.76 : x
  2. Step 2: Convert to fraction form
    572,361.76/858,542.64 = 198,384.76/x
  3. Step 3: Cross multiply
    572,361.76x = 858,542.64 × 198,384.76
  4. Step 4: Simplify right side
    572,361.76x = 170,321,775,586.17
  5. Step 5: Solve for x
    x = 170,321,775,586.17/572,361.76
  6. Step 6: Final answer
    x = 297,577.14

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Double scale
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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.