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Finding the Fourth Proportional to 354,585.69, 489,327.60 and 193,440.74

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Solution

The fourth proportional to 354,585.69, 489,327.60 and 193,440.74 is: 266,947.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,585.69 : 489,327.60 = 193,440.74 : x
  2. Step 2: Convert to fraction form
    354,585.69/489,327.60 = 193,440.74/x
  3. Step 3: Cross multiply
    354,585.69x = 489,327.60 × 193,440.74
  4. Step 4: Simplify right side
    354,585.69x = 94,655,893,046.42
  5. Step 5: Solve for x
    x = 94,655,893,046.42/354,585.69
  6. Step 6: Final answer
    x = 266,947.87

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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.