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Finding the Fourth Proportional to 719,396.84, 992,764.18 and 397,104.12

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Solution

The fourth proportional to 719,396.84, 992,764.18 and 397,104.12 is: 548,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,396.84 : 992,764.18 = 397,104.12 : x
  2. Step 2: Convert to fraction form
    719,396.84/992,764.18 = 397,104.12/x
  3. Step 3: Cross multiply
    719,396.84x = 992,764.18 × 397,104.12
  4. Step 4: Simplify right side
    719,396.84x = 394,230,746,562.80
  5. Step 5: Solve for x
    x = 394,230,746,562.80/719,396.84
  6. Step 6: Final answer
    x = 548,001.77

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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.