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Finding the Fourth Proportional to 70,480.52, 106,143.11 and 64,181.96

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Solution

The fourth proportional to 70,480.52, 106,143.11 and 64,181.96 is: 96,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,480.52 : 106,143.11 = 64,181.96 : x
  2. Step 2: Convert to fraction form
    70,480.52/106,143.11 = 64,181.96/x
  3. Step 3: Cross multiply
    70,480.52x = 106,143.11 × 64,181.96
  4. Step 4: Simplify right side
    70,480.52x = 6,812,472,840.30
  5. Step 5: Solve for x
    x = 6,812,472,840.30/70,480.52
  6. Step 6: Final answer
    x = 96,657.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.