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Finding the Fourth Proportional to 70,693.58, 106,029.36 and 45,909.33

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Solution

The fourth proportional to 70,693.58, 106,029.36 and 45,909.33 is: 68,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,693.58 : 106,029.36 = 45,909.33 : x
  2. Step 2: Convert to fraction form
    70,693.58/106,029.36 = 45,909.33/x
  3. Step 3: Cross multiply
    70,693.58x = 106,029.36 × 45,909.33
  4. Step 4: Simplify right side
    70,693.58x = 4,867,736,877.93
  5. Step 5: Solve for x
    x = 4,867,736,877.93/70,693.58
  6. Step 6: Final answer
    x = 68,856.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.