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Finding the Fourth Proportional to 29,978.79, 41,357.03 and 17,396.25

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Solution

The fourth proportional to 29,978.79, 41,357.03 and 17,396.25 is: 23,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,978.79 : 41,357.03 = 17,396.25 : x
  2. Step 2: Convert to fraction form
    29,978.79/41,357.03 = 17,396.25/x
  3. Step 3: Cross multiply
    29,978.79x = 41,357.03 × 17,396.25
  4. Step 4: Simplify right side
    29,978.79x = 719,457,146.16
  5. Step 5: Solve for x
    x = 719,457,146.16/29,978.79
  6. Step 6: Final answer
    x = 23,998.87

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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.