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Finding the Fourth Proportional to 25,579, 38,370.66 and 7,111

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Solution

The fourth proportional to 25,579, 38,370.66 and 7,111 is: 10,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,579 : 38,370.66 = 7,111 : x
  2. Step 2: Convert to fraction form
    25,579/38,370.66 = 7,111/x
  3. Step 3: Cross multiply
    25,579x = 38,370.66 × 7,111
  4. Step 4: Simplify right side
    25,579x = 272,853,763.26
  5. Step 5: Solve for x
    x = 272,853,763.26/25,579
  6. Step 6: Final answer
    x = 10,667.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.