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Finding the Fourth Proportional to 70,425.33, 105,571.85 and 23,645.40

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Solution

The fourth proportional to 70,425.33, 105,571.85 and 23,645.40 is: 35,445.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,425.33 : 105,571.85 = 23,645.40 : x
  2. Step 2: Convert to fraction form
    70,425.33/105,571.85 = 23,645.40/x
  3. Step 3: Cross multiply
    70,425.33x = 105,571.85 × 23,645.40
  4. Step 4: Simplify right side
    70,425.33x = 2,496,288,503.76
  5. Step 5: Solve for x
    x = 2,496,288,503.76/70,425.33
  6. Step 6: Final answer
    x = 35,445.89

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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.