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Finding the Fourth Proportional to 71,326.98, 107,023.68 and 31,910.76

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Solution

The fourth proportional to 71,326.98, 107,023.68 and 31,910.76 is: 47,881.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.98 : 107,023.68 = 31,910.76 : x
  2. Step 2: Convert to fraction form
    71,326.98/107,023.68 = 31,910.76/x
  3. Step 3: Cross multiply
    71,326.98x = 107,023.68 × 31,910.76
  4. Step 4: Simplify right side
    71,326.98x = 3,415,206,966.80
  5. Step 5: Solve for x
    x = 3,415,206,966.80/71,326.98
  6. Step 6: Final answer
    x = 47,881.00

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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.