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Finding the Fourth Proportional to 29,687.51, 40,968.79 and 16,258.78

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Solution

The fourth proportional to 29,687.51, 40,968.79 and 16,258.78 is: 22,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,687.51 : 40,968.79 = 16,258.78 : x
  2. Step 2: Convert to fraction form
    29,687.51/40,968.79 = 16,258.78/x
  3. Step 3: Cross multiply
    29,687.51x = 40,968.79 × 16,258.78
  4. Step 4: Simplify right side
    29,687.51x = 666,102,323.59
  5. Step 5: Solve for x
    x = 666,102,323.59/29,687.51
  6. Step 6: Final answer
    x = 22,437.12

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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.