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Finding the Fourth Proportional to 60,571.34, 90,812.66 and 28,539.50

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Solution

The fourth proportional to 60,571.34, 90,812.66 and 28,539.50 is: 42,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,571.34 : 90,812.66 = 28,539.50 : x
  2. Step 2: Convert to fraction form
    60,571.34/90,812.66 = 28,539.50/x
  3. Step 3: Cross multiply
    60,571.34x = 90,812.66 × 28,539.50
  4. Step 4: Simplify right side
    60,571.34x = 2,591,747,910.07
  5. Step 5: Solve for x
    x = 2,591,747,910.07/60,571.34
  6. Step 6: Final answer
    x = 42,788.35

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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.