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Finding the Fourth Proportional to 655,391.70, 983,087.55 and 445,439.70

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Solution

The fourth proportional to 655,391.70, 983,087.55 and 445,439.70 is: 668,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,391.70 : 983,087.55 = 445,439.70 : x
  2. Step 2: Convert to fraction form
    655,391.70/983,087.55 = 445,439.70/x
  3. Step 3: Cross multiply
    655,391.70x = 983,087.55 × 445,439.70
  4. Step 4: Simplify right side
    655,391.70x = 437,906,223,345.74
  5. Step 5: Solve for x
    x = 437,906,223,345.74/655,391.70
  6. Step 6: Final answer
    x = 668,159.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.