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Finding the Fourth Proportional to 43,672.16, 65,496.90 and 12,500.12

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Solution

The fourth proportional to 43,672.16, 65,496.90 and 12,500.12 is: 18,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,672.16 : 65,496.90 = 12,500.12 : x
  2. Step 2: Convert to fraction form
    43,672.16/65,496.90 = 12,500.12/x
  3. Step 3: Cross multiply
    43,672.16x = 65,496.90 × 12,500.12
  4. Step 4: Simplify right side
    43,672.16x = 818,719,109.63
  5. Step 5: Solve for x
    x = 818,719,109.63/43,672.16
  6. Step 6: Final answer
    x = 18,746.93

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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.