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Finding the Fourth Proportional to 44,487.87, 66,718.08 and 12,900.26

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Solution

The fourth proportional to 44,487.87, 66,718.08 and 12,900.26 is: 19,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,487.87 : 66,718.08 = 12,900.26 : x
  2. Step 2: Convert to fraction form
    44,487.87/66,718.08 = 12,900.26/x
  3. Step 3: Cross multiply
    44,487.87x = 66,718.08 × 12,900.26
  4. Step 4: Simplify right side
    44,487.87x = 860,680,680.99
  5. Step 5: Solve for x
    x = 860,680,680.99/44,487.87
  6. Step 6: Final answer
    x = 19,346.41

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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.