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Finding the Fourth Proportional to 70,616.75, 105,915.69 and 26,237.48

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Solution

The fourth proportional to 70,616.75, 105,915.69 and 26,237.48 is: 39,352.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,616.75 : 105,915.69 = 26,237.48 : x
  2. Step 2: Convert to fraction form
    70,616.75/105,915.69 = 26,237.48/x
  3. Step 3: Cross multiply
    70,616.75x = 105,915.69 × 26,237.48
  4. Step 4: Simplify right side
    70,616.75x = 2,778,960,268.48
  5. Step 5: Solve for x
    x = 2,778,960,268.48/70,616.75
  6. Step 6: Final answer
    x = 39,352.71

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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.