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Finding the Fourth Proportional to 1,092,811.60, 1,639,217.40 and 986,523.40

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Solution

The fourth proportional to 1,092,811.60, 1,639,217.40 and 986,523.40 is: 1,479,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,811.60 : 1,639,217.40 = 986,523.40 : x
  2. Step 2: Convert to fraction form
    1,092,811.60/1,639,217.40 = 986,523.40/x
  3. Step 3: Cross multiply
    1,092,811.60x = 1,639,217.40 × 986,523.40
  4. Step 4: Simplify right side
    1,092,811.60x = 1,617,126,322,787.16
  5. Step 5: Solve for x
    x = 1,617,126,322,787.16/1,092,811.60
  6. Step 6: Final answer
    x = 1,479,785.10

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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.