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Finding the Fourth Proportional to 408,545.70, 612,089.55 and 197,718.90

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Solution

The fourth proportional to 408,545.70, 612,089.55 and 197,718.90 is: 296,225.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,545.70 : 612,089.55 = 197,718.90 : x
  2. Step 2: Convert to fraction form
    408,545.70/612,089.55 = 197,718.90/x
  3. Step 3: Cross multiply
    408,545.70x = 612,089.55 × 197,718.90
  4. Step 4: Simplify right side
    408,545.70x = 121,021,672,527.50
  5. Step 5: Solve for x
    x = 121,021,672,527.50/408,545.70
  6. Step 6: Final answer
    x = 296,225.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.