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Finding the Fourth Proportional to 70,122.68, 97,422.57 and 69,281.92

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Solution

The fourth proportional to 70,122.68, 97,422.57 and 69,281.92 is: 96,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,122.68 : 97,422.57 = 69,281.92 : x
  2. Step 2: Convert to fraction form
    70,122.68/97,422.57 = 69,281.92/x
  3. Step 3: Cross multiply
    70,122.68x = 97,422.57 × 69,281.92
  4. Step 4: Simplify right side
    70,122.68x = 6,749,622,700.93
  5. Step 5: Solve for x
    x = 6,749,622,700.93/70,122.68
  6. Step 6: Final answer
    x = 96,254.49

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.