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Finding the Fourth Proportional to 70,628.79, 97,462.94 and 38,799.03

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Solution

The fourth proportional to 70,628.79, 97,462.94 and 38,799.03 is: 53,540.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,628.79 : 97,462.94 = 38,799.03 : x
  2. Step 2: Convert to fraction form
    70,628.79/97,462.94 = 38,799.03/x
  3. Step 3: Cross multiply
    70,628.79x = 97,462.94 × 38,799.03
  4. Step 4: Simplify right side
    70,628.79x = 3,781,467,338.95
  5. Step 5: Solve for x
    x = 3,781,467,338.95/70,628.79
  6. Step 6: Final answer
    x = 53,540.03

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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.