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Finding the Fourth Proportional to 354,914.65, 489,789.14 and 193,770.11

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Solution

The fourth proportional to 354,914.65, 489,789.14 and 193,770.11 is: 267,406.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,914.65 : 489,789.14 = 193,770.11 : x
  2. Step 2: Convert to fraction form
    354,914.65/489,789.14 = 193,770.11/x
  3. Step 3: Cross multiply
    354,914.65x = 489,789.14 × 193,770.11
  4. Step 4: Simplify right side
    354,914.65x = 94,906,495,534.61
  5. Step 5: Solve for x
    x = 94,906,495,534.61/354,914.65
  6. Step 6: Final answer
    x = 267,406.53

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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.