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Finding the Fourth Proportional to 719,270.88, 992,626.20 and 413,446.56

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Solution

The fourth proportional to 719,270.88, 992,626.20 and 413,446.56 is: 570,574.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,270.88 : 992,626.20 = 413,446.56 : x
  2. Step 2: Convert to fraction form
    719,270.88/992,626.20 = 413,446.56/x
  3. Step 3: Cross multiply
    719,270.88x = 992,626.20 × 413,446.56
  4. Step 4: Simplify right side
    719,270.88x = 410,397,887,755.87
  5. Step 5: Solve for x
    x = 410,397,887,755.87/719,270.88
  6. Step 6: Final answer
    x = 570,574.87

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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.