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Finding the Fourth Proportional to 683,943.84, 943,860.31 and 378,025.04

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Solution

The fourth proportional to 683,943.84, 943,860.31 and 378,025.04 is: 521,684.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,943.84 : 943,860.31 = 378,025.04 : x
  2. Step 2: Convert to fraction form
    683,943.84/943,860.31 = 378,025.04/x
  3. Step 3: Cross multiply
    683,943.84x = 943,860.31 × 378,025.04
  4. Step 4: Simplify right side
    683,943.84x = 356,802,832,856.75
  5. Step 5: Solve for x
    x = 356,802,832,856.75/683,943.84
  6. Step 6: Final answer
    x = 521,684.40

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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.