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Finding the Fourth Proportional to 95,774.94, 143,687.93 and 78,938.69

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Solution

The fourth proportional to 95,774.94, 143,687.93 and 78,938.69 is: 118,429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,774.94 : 143,687.93 = 78,938.69 : x
  2. Step 2: Convert to fraction form
    95,774.94/143,687.93 = 78,938.69/x
  3. Step 3: Cross multiply
    95,774.94x = 143,687.93 × 78,938.69
  4. Step 4: Simplify right side
    95,774.94x = 11,342,535,849.88
  5. Step 5: Solve for x
    x = 11,342,535,849.88/95,774.94
  6. Step 6: Final answer
    x = 118,429.06

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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.