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Finding the Fourth Proportional to 880,998.30, 1,321,497.45 and 615,277.80

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Solution

The fourth proportional to 880,998.30, 1,321,497.45 and 615,277.80 is: 922,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,998.30 : 1,321,497.45 = 615,277.80 : x
  2. Step 2: Convert to fraction form
    880,998.30/1,321,497.45 = 615,277.80/x
  3. Step 3: Cross multiply
    880,998.30x = 1,321,497.45 × 615,277.80
  4. Step 4: Simplify right side
    880,998.30x = 813,088,043,741.61
  5. Step 5: Solve for x
    x = 813,088,043,741.61/880,998.30
  6. Step 6: Final answer
    x = 922,916.70

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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.