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Finding the Fourth Proportional to 698,049, 963,202.69 and 392,066.76

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Solution

The fourth proportional to 698,049, 963,202.69 and 392,066.76 is: 540,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,049 : 963,202.69 = 392,066.76 : x
  2. Step 2: Convert to fraction form
    698,049/963,202.69 = 392,066.76/x
  3. Step 3: Cross multiply
    698,049x = 963,202.69 × 392,066.76
  4. Step 4: Simplify right side
    698,049x = 377,639,761,993.68
  5. Step 5: Solve for x
    x = 377,639,761,993.68/698,049
  6. Step 6: Final answer
    x = 540,993.20

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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.