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Finding the Fourth Proportional to 29,713.76, 40,999.78 and 16,961.12

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Solution

The fourth proportional to 29,713.76, 40,999.78 and 16,961.12 is: 23,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,713.76 : 40,999.78 = 16,961.12 : x
  2. Step 2: Convert to fraction form
    29,713.76/40,999.78 = 16,961.12/x
  3. Step 3: Cross multiply
    29,713.76x = 40,999.78 × 16,961.12
  4. Step 4: Simplify right side
    29,713.76x = 695,402,188.55
  5. Step 5: Solve for x
    x = 695,402,188.55/29,713.76
  6. Step 6: Final answer
    x = 23,403.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.