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Finding the Fourth Proportional to 718,527.08, 991,626.42 and 396,300.20

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Solution

The fourth proportional to 718,527.08, 991,626.42 and 396,300.20 is: 546,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,527.08 : 991,626.42 = 396,300.20 : x
  2. Step 2: Convert to fraction form
    718,527.08/991,626.42 = 396,300.20/x
  3. Step 3: Cross multiply
    718,527.08x = 991,626.42 × 396,300.20
  4. Step 4: Simplify right side
    718,527.08x = 392,981,748,571.28
  5. Step 5: Solve for x
    x = 392,981,748,571.28/718,527.08
  6. Step 6: Final answer
    x = 546,926.84

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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.