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Finding the Fourth Proportional to 8,368.35, 12,539.81 and 5,726.53

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Solution

The fourth proportional to 8,368.35, 12,539.81 and 5,726.53 is: 8,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.35 : 12,539.81 = 5,726.53 : x
  2. Step 2: Convert to fraction form
    8,368.35/12,539.81 = 5,726.53/x
  3. Step 3: Cross multiply
    8,368.35x = 12,539.81 × 5,726.53
  4. Step 4: Simplify right side
    8,368.35x = 71,809,628.15
  5. Step 5: Solve for x
    x = 71,809,628.15/8,368.35
  6. Step 6: Final answer
    x = 8,581.10

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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.