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Finding the Fourth Proportional to 251,166.80, 376,515.96 and 84,838.48

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Solution

The fourth proportional to 251,166.80, 376,515.96 and 84,838.48 is: 127,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,166.80 : 376,515.96 = 84,838.48 : x
  2. Step 2: Convert to fraction form
    251,166.80/376,515.96 = 84,838.48/x
  3. Step 3: Cross multiply
    251,166.80x = 376,515.96 × 84,838.48
  4. Step 4: Simplify right side
    251,166.80x = 31,943,041,742.14
  5. Step 5: Solve for x
    x = 31,943,041,742.14/251,166.80
  6. Step 6: Final answer
    x = 127,178.60

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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.