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Finding the Fourth Proportional to 354,963.30, 489,869.19 and 193,833.30

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Solution

The fourth proportional to 354,963.30, 489,869.19 and 193,833.30 is: 267,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,963.30 : 489,869.19 = 193,833.30 : x
  2. Step 2: Convert to fraction form
    354,963.30/489,869.19 = 193,833.30/x
  3. Step 3: Cross multiply
    354,963.30x = 489,869.19 × 193,833.30
  4. Step 4: Simplify right side
    354,963.30x = 94,952,961,666.03
  5. Step 5: Solve for x
    x = 94,952,961,666.03/354,963.30
  6. Step 6: Final answer
    x = 267,500.79

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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.