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Finding the Fourth Proportional to 665,860.56, 998,885.61 and 216,436.92

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Solution

The fourth proportional to 665,860.56, 998,885.61 and 216,436.92 is: 324,686.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,860.56 : 998,885.61 = 216,436.92 : x
  2. Step 2: Convert to fraction form
    665,860.56/998,885.61 = 216,436.92/x
  3. Step 3: Cross multiply
    665,860.56x = 998,885.61 × 216,436.92
  4. Step 4: Simplify right side
    665,860.56x = 216,195,724,860.72
  5. Step 5: Solve for x
    x = 216,195,724,860.72/665,860.56
  6. Step 6: Final answer
    x = 324,686.18

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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.