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Finding the Fourth Proportional to 106,478.88, 146,951.16 and 79,574.73

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Solution

The fourth proportional to 106,478.88, 146,951.16 and 79,574.73 is: 109,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,478.88 : 146,951.16 = 79,574.73 : x
  2. Step 2: Convert to fraction form
    106,478.88/146,951.16 = 79,574.73/x
  3. Step 3: Cross multiply
    106,478.88x = 146,951.16 × 79,574.73
  4. Step 4: Simplify right side
    106,478.88x = 11,693,598,880.19
  5. Step 5: Solve for x
    x = 11,693,598,880.19/106,478.88
  6. Step 6: Final answer
    x = 109,820.83

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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.