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Finding the Fourth Proportional to 70,465.38, 105,722.38 and 44,138.76

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Solution

The fourth proportional to 70,465.38, 105,722.38 and 44,138.76 is: 66,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,465.38 : 105,722.38 = 44,138.76 : x
  2. Step 2: Convert to fraction form
    70,465.38/105,722.38 = 44,138.76/x
  3. Step 3: Cross multiply
    70,465.38x = 105,722.38 × 44,138.76
  4. Step 4: Simplify right side
    70,465.38x = 4,666,454,757.45
  5. Step 5: Solve for x
    x = 4,666,454,757.45/70,465.38
  6. Step 6: Final answer
    x = 66,223.37

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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.