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Finding the Fourth Proportional to 880,969.80, 1,321,454.70 and 615,249.30

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Solution

The fourth proportional to 880,969.80, 1,321,454.70 and 615,249.30 is: 922,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,969.80 : 1,321,454.70 = 615,249.30 : x
  2. Step 2: Convert to fraction form
    880,969.80/1,321,454.70 = 615,249.30/x
  3. Step 3: Cross multiply
    880,969.80x = 1,321,454.70 × 615,249.30
  4. Step 4: Simplify right side
    880,969.80x = 813,024,079,156.71
  5. Step 5: Solve for x
    x = 813,024,079,156.71/880,969.80
  6. Step 6: Final answer
    x = 922,873.95

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Double scale
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Similar ratio
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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.