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Finding the Fourth Proportional to 540,177.39, 745,424.78 and 298,454.76

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Solution

The fourth proportional to 540,177.39, 745,424.78 and 298,454.76 is: 411,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,177.39 : 745,424.78 = 298,454.76 : x
  2. Step 2: Convert to fraction form
    540,177.39/745,424.78 = 298,454.76/x
  3. Step 3: Cross multiply
    540,177.39x = 745,424.78 × 298,454.76
  4. Step 4: Simplify right side
    540,177.39x = 222,475,572,320.68
  5. Step 5: Solve for x
    x = 222,475,572,320.68/540,177.39
  6. Step 6: Final answer
    x = 411,856.51

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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.