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Finding the Fourth Proportional to 52,991.78, 79,314.60 and 38,948.09

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Solution

The fourth proportional to 52,991.78, 79,314.60 and 38,948.09 is: 58,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,991.78 : 79,314.60 = 38,948.09 : x
  2. Step 2: Convert to fraction form
    52,991.78/79,314.60 = 38,948.09/x
  3. Step 3: Cross multiply
    52,991.78x = 79,314.60 × 38,948.09
  4. Step 4: Simplify right side
    52,991.78x = 3,089,152,179.11
  5. Step 5: Solve for x
    x = 3,089,152,179.11/52,991.78
  6. Step 6: Final answer
    x = 58,294.93

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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.