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Finding the Fourth Proportional to 65,907.69, 98,878.40 and 19,160.57

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Solution

The fourth proportional to 65,907.69, 98,878.40 and 19,160.57 is: 28,745.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907.69 : 98,878.40 = 19,160.57 : x
  2. Step 2: Convert to fraction form
    65,907.69/98,878.40 = 19,160.57/x
  3. Step 3: Cross multiply
    65,907.69x = 98,878.40 × 19,160.57
  4. Step 4: Simplify right side
    65,907.69x = 1,894,565,914.49
  5. Step 5: Solve for x
    x = 1,894,565,914.49/65,907.69
  6. Step 6: Final answer
    x = 28,745.75

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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.