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Finding the Fourth Proportional to 256,545.88, 354,132.30 and 229,640.92

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Solution

The fourth proportional to 256,545.88, 354,132.30 and 229,640.92 is: 316,993.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,545.88 : 354,132.30 = 229,640.92 : x
  2. Step 2: Convert to fraction form
    256,545.88/354,132.30 = 229,640.92/x
  3. Step 3: Cross multiply
    256,545.88x = 354,132.30 × 229,640.92
  4. Step 4: Simplify right side
    256,545.88x = 81,323,267,173.72
  5. Step 5: Solve for x
    x = 81,323,267,173.72/256,545.88
  6. Step 6: Final answer
    x = 316,993.07

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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.