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Finding the Fourth Proportional to 70,639.20, 105,947.15 and 23,254.92

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Solution

The fourth proportional to 70,639.20, 105,947.15 and 23,254.92 is: 34,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.20 : 105,947.15 = 23,254.92 : x
  2. Step 2: Convert to fraction form
    70,639.20/105,947.15 = 23,254.92/x
  3. Step 3: Cross multiply
    70,639.20x = 105,947.15 × 23,254.92
  4. Step 4: Simplify right side
    70,639.20x = 2,463,792,381.20
  5. Step 5: Solve for x
    x = 2,463,792,381.20/70,639.20
  6. Step 6: Final answer
    x = 34,878.54

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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.