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Finding the Fourth Proportional to 539,190.40, 744,077.60 and 297,474.92

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Solution

The fourth proportional to 539,190.40, 744,077.60 and 297,474.92 is: 410,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,190.40 : 744,077.60 = 297,474.92 : x
  2. Step 2: Convert to fraction form
    539,190.40/744,077.60 = 297,474.92/x
  3. Step 3: Cross multiply
    539,190.40x = 744,077.60 × 297,474.92
  4. Step 4: Simplify right side
    539,190.40x = 221,344,424,533.79
  5. Step 5: Solve for x
    x = 221,344,424,533.79/539,190.40
  6. Step 6: Final answer
    x = 410,512.55

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Double scale
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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.