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Finding the Fourth Proportional to 620,419.20, 856,710.76 and 600,357.12

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Solution

The fourth proportional to 620,419.20, 856,710.76 and 600,357.12 is: 829,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,419.20 : 856,710.76 = 600,357.12 : x
  2. Step 2: Convert to fraction form
    620,419.20/856,710.76 = 600,357.12/x
  3. Step 3: Cross multiply
    620,419.20x = 856,710.76 × 600,357.12
  4. Step 4: Simplify right side
    620,419.20x = 514,332,404,546.61
  5. Step 5: Solve for x
    x = 514,332,404,546.61/620,419.20
  6. Step 6: Final answer
    x = 829,007.88

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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.