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Finding the Fourth Proportional to 84,006.72, 125,909.91 and 58,568.67

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Solution

The fourth proportional to 84,006.72, 125,909.91 and 58,568.67 is: 87,783.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,006.72 : 125,909.91 = 58,568.67 : x
  2. Step 2: Convert to fraction form
    84,006.72/125,909.91 = 58,568.67/x
  3. Step 3: Cross multiply
    84,006.72x = 125,909.91 × 58,568.67
  4. Step 4: Simplify right side
    84,006.72x = 7,374,375,968.52
  5. Step 5: Solve for x
    x = 7,374,375,968.52/84,006.72
  6. Step 6: Final answer
    x = 87,783.17

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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.