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Finding the Fourth Proportional to 719,333.66, 992,680.54 and 397,043.84

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Solution

The fourth proportional to 719,333.66, 992,680.54 and 397,043.84 is: 547,920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,333.66 : 992,680.54 = 397,043.84 : x
  2. Step 2: Convert to fraction form
    719,333.66/992,680.54 = 397,043.84/x
  3. Step 3: Cross multiply
    719,333.66x = 992,680.54 × 397,043.84
  4. Step 4: Simplify right side
    719,333.66x = 394,137,693,494.87
  5. Step 5: Solve for x
    x = 394,137,693,494.87/719,333.66
  6. Step 6: Final answer
    x = 547,920.55

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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.