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Finding the Fourth Proportional to 71,917.77, 107,913.11 and 48,495

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Solution

The fourth proportional to 71,917.77, 107,913.11 and 48,495 is: 72,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917.77 : 107,913.11 = 48,495 : x
  2. Step 2: Convert to fraction form
    71,917.77/107,913.11 = 48,495/x
  3. Step 3: Cross multiply
    71,917.77x = 107,913.11 × 48,495
  4. Step 4: Simplify right side
    71,917.77x = 5,233,246,026.98
  5. Step 5: Solve for x
    x = 5,233,246,026.98/71,917.77
  6. Step 6: Final answer
    x = 72,767.08

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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.