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Finding the Fourth Proportional to 354,545.22, 489,279.25 and 193,406.19

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Solution

The fourth proportional to 354,545.22, 489,279.25 and 193,406.19 is: 266,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,545.22 : 489,279.25 = 193,406.19 : x
  2. Step 2: Convert to fraction form
    354,545.22/489,279.25 = 193,406.19/x
  3. Step 3: Cross multiply
    354,545.22x = 489,279.25 × 193,406.19
  4. Step 4: Simplify right side
    354,545.22x = 94,629,635,588.56
  5. Step 5: Solve for x
    x = 94,629,635,588.56/354,545.22
  6. Step 6: Final answer
    x = 266,904.28

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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.