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Finding the Fourth Proportional to 70,768.68, 97,609.76 and 40,542.99

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Solution

The fourth proportional to 70,768.68, 97,609.76 and 40,542.99 is: 55,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,768.68 : 97,609.76 = 40,542.99 : x
  2. Step 2: Convert to fraction form
    70,768.68/97,609.76 = 40,542.99/x
  3. Step 3: Cross multiply
    70,768.68x = 97,609.76 × 40,542.99
  4. Step 4: Simplify right side
    70,768.68x = 3,957,390,832.82
  5. Step 5: Solve for x
    x = 3,957,390,832.82/70,768.68
  6. Step 6: Final answer
    x = 55,920.09

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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.