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Finding the Fourth Proportional to 29,507.66, 40,720.79 and 16,079.28

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Solution

The fourth proportional to 29,507.66, 40,720.79 and 16,079.28 is: 22,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,507.66 : 40,720.79 = 16,079.28 : x
  2. Step 2: Convert to fraction form
    29,507.66/40,720.79 = 16,079.28/x
  3. Step 3: Cross multiply
    29,507.66x = 40,720.79 × 16,079.28
  4. Step 4: Simplify right side
    29,507.66x = 654,760,984.23
  5. Step 5: Solve for x
    x = 654,760,984.23/29,507.66
  6. Step 6: Final answer
    x = 22,189.53

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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.