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Finding the Fourth Proportional to 40,447.89, 60,699.15 and 14,152.86

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Solution

The fourth proportional to 40,447.89, 60,699.15 and 14,152.86 is: 21,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,447.89 : 60,699.15 = 14,152.86 : x
  2. Step 2: Convert to fraction form
    40,447.89/60,699.15 = 14,152.86/x
  3. Step 3: Cross multiply
    40,447.89x = 60,699.15 × 14,152.86
  4. Step 4: Simplify right side
    40,447.89x = 859,066,572.07
  5. Step 5: Solve for x
    x = 859,066,572.07/40,447.89
  6. Step 6: Final answer
    x = 21,238.85

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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.