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Finding the Fourth Proportional to 71,015.41, 106,523.94 and 21,094.30

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Solution

The fourth proportional to 71,015.41, 106,523.94 and 21,094.30 is: 31,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,015.41 : 106,523.94 = 21,094.30 : x
  2. Step 2: Convert to fraction form
    71,015.41/106,523.94 = 21,094.30/x
  3. Step 3: Cross multiply
    71,015.41x = 106,523.94 × 21,094.30
  4. Step 4: Simplify right side
    71,015.41x = 2,247,047,947.54
  5. Step 5: Solve for x
    x = 2,247,047,947.54/71,015.41
  6. Step 6: Final answer
    x = 31,641.70

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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.