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Finding the Fourth Proportional to 70,910.49, 97,856.49 and 38,645.12

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Solution

The fourth proportional to 70,910.49, 97,856.49 and 38,645.12 is: 53,330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.49 : 97,856.49 = 38,645.12 : x
  2. Step 2: Convert to fraction form
    70,910.49/97,856.49 = 38,645.12/x
  3. Step 3: Cross multiply
    70,910.49x = 97,856.49 × 38,645.12
  4. Step 4: Simplify right side
    70,910.49x = 3,781,675,798.83
  5. Step 5: Solve for x
    x = 3,781,675,798.83/70,910.49
  6. Step 6: Final answer
    x = 53,330.27

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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.