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Finding the Fourth Proportional to 131,886.56, 197,855.76 and 48,781.28

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Solution

The fourth proportional to 131,886.56, 197,855.76 and 48,781.28 is: 73,181.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,886.56 : 197,855.76 = 48,781.28 : x
  2. Step 2: Convert to fraction form
    131,886.56/197,855.76 = 48,781.28/x
  3. Step 3: Cross multiply
    131,886.56x = 197,855.76 × 48,781.28
  4. Step 4: Simplify right side
    131,886.56x = 9,651,657,228.17
  5. Step 5: Solve for x
    x = 9,651,657,228.17/131,886.56
  6. Step 6: Final answer
    x = 73,181.51

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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.