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Finding the Fourth Proportional to 70,408.95, 97,162.25 and 38,576.76

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Solution

The fourth proportional to 70,408.95, 97,162.25 and 38,576.76 is: 53,234.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408.95 : 97,162.25 = 38,576.76 : x
  2. Step 2: Convert to fraction form
    70,408.95/97,162.25 = 38,576.76/x
  3. Step 3: Cross multiply
    70,408.95x = 97,162.25 × 38,576.76
  4. Step 4: Simplify right side
    70,408.95x = 3,748,204,606.43
  5. Step 5: Solve for x
    x = 3,748,204,606.43/70,408.95
  6. Step 6: Final answer
    x = 53,234.77

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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.