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Finding the Fourth Proportional to 70,604.86, 105,931.59 and 44,278.78

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Solution

The fourth proportional to 70,604.86, 105,931.59 and 44,278.78 is: 66,433.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,604.86 : 105,931.59 = 44,278.78 : x
  2. Step 2: Convert to fraction form
    70,604.86/105,931.59 = 44,278.78/x
  3. Step 3: Cross multiply
    70,604.86x = 105,931.59 × 44,278.78
  4. Step 4: Simplify right side
    70,604.86x = 4,690,521,568.66
  5. Step 5: Solve for x
    x = 4,690,521,568.66/70,604.86
  6. Step 6: Final answer
    x = 66,433.41

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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.