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Finding the Fourth Proportional to 51,294.98, 70,819.09 and 39,335.30

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Solution

The fourth proportional to 51,294.98, 70,819.09 and 39,335.30 is: 54,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,294.98 : 70,819.09 = 39,335.30 : x
  2. Step 2: Convert to fraction form
    51,294.98/70,819.09 = 39,335.30/x
  3. Step 3: Cross multiply
    51,294.98x = 70,819.09 × 39,335.30
  4. Step 4: Simplify right side
    51,294.98x = 2,785,690,150.88
  5. Step 5: Solve for x
    x = 2,785,690,150.88/51,294.98
  6. Step 6: Final answer
    x = 54,307.27

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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.