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Finding the Fourth Proportional to 571,864.80, 857,797.20 and 394,917.60

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Solution

The fourth proportional to 571,864.80, 857,797.20 and 394,917.60 is: 592,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,864.80 : 857,797.20 = 394,917.60 : x
  2. Step 2: Convert to fraction form
    571,864.80/857,797.20 = 394,917.60/x
  3. Step 3: Cross multiply
    571,864.80x = 857,797.20 × 394,917.60
  4. Step 4: Simplify right side
    571,864.80x = 338,759,211,510.72
  5. Step 5: Solve for x
    x = 338,759,211,510.72/571,864.80
  6. Step 6: Final answer
    x = 592,376.40

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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.