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Finding the Fourth Proportional to 181,763.10, 272,656.80 and 61,818.30

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Solution

The fourth proportional to 181,763.10, 272,656.80 and 61,818.30 is: 92,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,763.10 : 272,656.80 = 61,818.30 : x
  2. Step 2: Convert to fraction form
    181,763.10/272,656.80 = 61,818.30/x
  3. Step 3: Cross multiply
    181,763.10x = 272,656.80 × 61,818.30
  4. Step 4: Simplify right side
    181,763.10x = 16,855,179,859.44
  5. Step 5: Solve for x
    x = 16,855,179,859.44/181,763.10
  6. Step 6: Final answer
    x = 92,731.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.