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Finding the Fourth Proportional to 70,910.94, 97,857.11 and 38,645.56

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Solution

The fourth proportional to 70,910.94, 97,857.11 and 38,645.56 is: 53,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.94 : 97,857.11 = 38,645.56 : x
  2. Step 2: Convert to fraction form
    70,910.94/97,857.11 = 38,645.56/x
  3. Step 3: Cross multiply
    70,910.94x = 97,857.11 × 38,645.56
  4. Step 4: Simplify right side
    70,910.94x = 3,781,742,815.93
  5. Step 5: Solve for x
    x = 3,781,742,815.93/70,910.94
  6. Step 6: Final answer
    x = 53,330.88

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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.