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Finding the Fourth Proportional to 140,860.76, 194,386.73 and 77,198.41

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Solution

The fourth proportional to 140,860.76, 194,386.73 and 77,198.41 is: 106,533.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,860.76 : 194,386.73 = 77,198.41 : x
  2. Step 2: Convert to fraction form
    140,860.76/194,386.73 = 77,198.41/x
  3. Step 3: Cross multiply
    140,860.76x = 194,386.73 × 77,198.41
  4. Step 4: Simplify right side
    140,860.76x = 15,006,346,188.13
  5. Step 5: Solve for x
    x = 15,006,346,188.13/140,860.76
  6. Step 6: Final answer
    x = 106,533.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.