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Finding the Fourth Proportional to 70,711.55, 106,039.52 and 25,722.23

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Solution

The fourth proportional to 70,711.55, 106,039.52 and 25,722.23 is: 38,573.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,711.55 : 106,039.52 = 25,722.23 : x
  2. Step 2: Convert to fraction form
    70,711.55/106,039.52 = 25,722.23/x
  3. Step 3: Cross multiply
    70,711.55x = 106,039.52 × 25,722.23
  4. Step 4: Simplify right side
    70,711.55x = 2,727,572,263.72
  5. Step 5: Solve for x
    x = 2,727,572,263.72/70,711.55
  6. Step 6: Final answer
    x = 38,573.22

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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.