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Finding the Fourth Proportional to 61,438.33, 92,169.80 and 19,329.01

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Solution

The fourth proportional to 61,438.33, 92,169.80 and 19,329.01 is: 28,997.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,438.33 : 92,169.80 = 19,329.01 : x
  2. Step 2: Convert to fraction form
    61,438.33/92,169.80 = 19,329.01/x
  3. Step 3: Cross multiply
    61,438.33x = 92,169.80 × 19,329.01
  4. Step 4: Simplify right side
    61,438.33x = 1,781,550,985.90
  5. Step 5: Solve for x
    x = 1,781,550,985.90/61,438.33
  6. Step 6: Final answer
    x = 28,997.39

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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.