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Finding the Fourth Proportional to 75,911.76, 113,774.40 and 53,731.44

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Solution

The fourth proportional to 75,911.76, 113,774.40 and 53,731.44 is: 80,531.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,911.76 : 113,774.40 = 53,731.44 : x
  2. Step 2: Convert to fraction form
    75,911.76/113,774.40 = 53,731.44/x
  3. Step 3: Cross multiply
    75,911.76x = 113,774.40 × 53,731.44
  4. Step 4: Simplify right side
    75,911.76x = 6,113,262,347.14
  5. Step 5: Solve for x
    x = 6,113,262,347.14/75,911.76
  6. Step 6: Final answer
    x = 80,531.16

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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.