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Finding the Fourth Proportional to 140,709.66, 194,185.11 and 77,053.02

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Solution

The fourth proportional to 140,709.66, 194,185.11 and 77,053.02 is: 106,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,709.66 : 194,185.11 = 77,053.02 : x
  2. Step 2: Convert to fraction form
    140,709.66/194,185.11 = 77,053.02/x
  3. Step 3: Cross multiply
    140,709.66x = 194,185.11 × 77,053.02
  4. Step 4: Simplify right side
    140,709.66x = 14,962,549,164.53
  5. Step 5: Solve for x
    x = 14,962,549,164.53/140,709.66
  6. Step 6: Final answer
    x = 106,336.33

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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.