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Finding the Fourth Proportional to 51,164.92, 70,608.80 and 28,505.44

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Solution

The fourth proportional to 51,164.92, 70,608.80 and 28,505.44 is: 39,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,164.92 : 70,608.80 = 28,505.44 : x
  2. Step 2: Convert to fraction form
    51,164.92/70,608.80 = 28,505.44/x
  3. Step 3: Cross multiply
    51,164.92x = 70,608.80 × 28,505.44
  4. Step 4: Simplify right side
    51,164.92x = 2,012,734,911.87
  5. Step 5: Solve for x
    x = 2,012,734,911.87/51,164.92
  6. Step 6: Final answer
    x = 39,338.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.