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Finding the Fourth Proportional to 70,443.70, 105,672.08 and 25,476.30

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Solution

The fourth proportional to 70,443.70, 105,672.08 and 25,476.30 is: 38,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,443.70 : 105,672.08 = 25,476.30 : x
  2. Step 2: Convert to fraction form
    70,443.70/105,672.08 = 25,476.30/x
  3. Step 3: Cross multiply
    70,443.70x = 105,672.08 × 25,476.30
  4. Step 4: Simplify right side
    70,443.70x = 2,692,133,611.70
  5. Step 5: Solve for x
    x = 2,692,133,611.70/70,443.70
  6. Step 6: Final answer
    x = 38,216.81

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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.