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Finding the Fourth Proportional to 71,789.19, 99,074.14 and 47,548.42

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Solution

The fourth proportional to 71,789.19, 99,074.14 and 47,548.42 is: 65,620.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,789.19 : 99,074.14 = 47,548.42 : x
  2. Step 2: Convert to fraction form
    71,789.19/99,074.14 = 47,548.42/x
  3. Step 3: Cross multiply
    71,789.19x = 99,074.14 × 47,548.42
  4. Step 4: Simplify right side
    71,789.19x = 4,710,818,453.30
  5. Step 5: Solve for x
    x = 4,710,818,453.30/71,789.19
  6. Step 6: Final answer
    x = 65,620.17

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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.