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Finding the Fourth Proportional to 57,515.64, 78,947.48 and 51,087.48

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Solution

The fourth proportional to 57,515.64, 78,947.48 and 51,087.48 is: 70,124.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,515.64 : 78,947.48 = 51,087.48 : x
  2. Step 2: Convert to fraction form
    57,515.64/78,947.48 = 51,087.48/x
  3. Step 3: Cross multiply
    57,515.64x = 78,947.48 × 51,087.48
  4. Step 4: Simplify right side
    57,515.64x = 4,033,227,805.55
  5. Step 5: Solve for x
    x = 4,033,227,805.55/57,515.64
  6. Step 6: Final answer
    x = 70,124.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.