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Finding the Fourth Proportional to 698,251.80, 963,588.24 and 396,445.80

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Solution

The fourth proportional to 698,251.80, 963,588.24 and 396,445.80 is: 547,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,251.80 : 963,588.24 = 396,445.80 : x
  2. Step 2: Convert to fraction form
    698,251.80/963,588.24 = 396,445.80/x
  3. Step 3: Cross multiply
    698,251.80x = 963,588.24 × 396,445.80
  4. Step 4: Simplify right side
    698,251.80x = 382,010,510,677.39
  5. Step 5: Solve for x
    x = 382,010,510,677.39/698,251.80
  6. Step 6: Final answer
    x = 547,095.63

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Double scale
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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.