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Finding the Fourth Proportional to 699,081.57, 964,718.15 and 388,977.27

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Solution

The fourth proportional to 699,081.57, 964,718.15 and 388,977.27 is: 536,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,081.57 : 964,718.15 = 388,977.27 : x
  2. Step 2: Convert to fraction form
    699,081.57/964,718.15 = 388,977.27/x
  3. Step 3: Cross multiply
    699,081.57x = 964,718.15 × 388,977.27
  4. Step 4: Simplify right side
    699,081.57x = 375,253,434,358.41
  5. Step 5: Solve for x
    x = 375,253,434,358.41/699,081.57
  6. Step 6: Final answer
    x = 536,780.61

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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.