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Finding the Fourth Proportional to 132,351.70, 198,527.55 and 70,143.70

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Solution

The fourth proportional to 132,351.70, 198,527.55 and 70,143.70 is: 105,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,351.70 : 198,527.55 = 70,143.70 : x
  2. Step 2: Convert to fraction form
    132,351.70/198,527.55 = 70,143.70/x
  3. Step 3: Cross multiply
    132,351.70x = 198,527.55 × 70,143.70
  4. Step 4: Simplify right side
    132,351.70x = 13,925,456,908.94
  5. Step 5: Solve for x
    x = 13,925,456,908.94/132,351.70
  6. Step 6: Final answer
    x = 105,215.55

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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.