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Finding the Fourth Proportional to 571,711.67, 789,304.22 and 357,142.37

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Solution

The fourth proportional to 571,711.67, 789,304.22 and 357,142.37 is: 493,070.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,711.67 : 789,304.22 = 357,142.37 : x
  2. Step 2: Convert to fraction form
    571,711.67/789,304.22 = 357,142.37/x
  3. Step 3: Cross multiply
    571,711.67x = 789,304.22 × 357,142.37
  4. Step 4: Simplify right side
    571,711.67x = 281,893,974,049.57
  5. Step 5: Solve for x
    x = 281,893,974,049.57/571,711.67
  6. Step 6: Final answer
    x = 493,070.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.