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Finding the Fourth Proportional to 1,216,809, 1,679,154.12 and 700,545.78

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Solution

The fourth proportional to 1,216,809, 1,679,154.12 and 700,545.78 is: 966,728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,809 : 1,679,154.12 = 700,545.78 : x
  2. Step 2: Convert to fraction form
    1,216,809/1,679,154.12 = 700,545.78/x
  3. Step 3: Cross multiply
    1,216,809x = 1,679,154.12 × 700,545.78
  4. Step 4: Simplify right side
    1,216,809x = 1,176,324,332,735.61
  5. Step 5: Solve for x
    x = 1,176,324,332,735.61/1,216,809
  6. Step 6: Final answer
    x = 966,728.82

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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.