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Finding the Fourth Proportional to 56,683.95, 84,979.37 and 38,865.39

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Solution

The fourth proportional to 56,683.95, 84,979.37 and 38,865.39 is: 58,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,683.95 : 84,979.37 = 38,865.39 : x
  2. Step 2: Convert to fraction form
    56,683.95/84,979.37 = 38,865.39/x
  3. Step 3: Cross multiply
    56,683.95x = 84,979.37 × 38,865.39
  4. Step 4: Simplify right side
    56,683.95x = 3,302,756,162.68
  5. Step 5: Solve for x
    x = 3,302,756,162.68/56,683.95
  6. Step 6: Final answer
    x = 58,266.16

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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.