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Finding the Fourth Proportional to 29,486.52, 40,695.12 and 16,911

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Solution

The fourth proportional to 29,486.52, 40,695.12 and 16,911 is: 23,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,486.52 : 40,695.12 = 16,911 : x
  2. Step 2: Convert to fraction form
    29,486.52/40,695.12 = 16,911/x
  3. Step 3: Cross multiply
    29,486.52x = 40,695.12 × 16,911
  4. Step 4: Simplify right side
    29,486.52x = 688,195,174.32
  5. Step 5: Solve for x
    x = 688,195,174.32/29,486.52
  6. Step 6: Final answer
    x = 23,339.31

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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.