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Finding the Fourth Proportional to 29,415.60, 40,593.79 and 15,986.89

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Solution

The fourth proportional to 29,415.60, 40,593.79 and 15,986.89 is: 22,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,415.60 : 40,593.79 = 15,986.89 : x
  2. Step 2: Convert to fraction form
    29,415.60/40,593.79 = 15,986.89/x
  3. Step 3: Cross multiply
    29,415.60x = 40,593.79 × 15,986.89
  4. Step 4: Simplify right side
    29,415.60x = 648,968,380.82
  5. Step 5: Solve for x
    x = 648,968,380.82/29,415.60
  6. Step 6: Final answer
    x = 22,062.05

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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.