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Finding the Fourth Proportional to 8,683.68, 11,987.52 and 5,699.52

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Solution

The fourth proportional to 8,683.68, 11,987.52 and 5,699.52 is: 7,867.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.68 : 11,987.52 = 5,699.52 : x
  2. Step 2: Convert to fraction form
    8,683.68/11,987.52 = 5,699.52/x
  3. Step 3: Cross multiply
    8,683.68x = 11,987.52 × 5,699.52
  4. Step 4: Simplify right side
    8,683.68x = 68,323,109.99
  5. Step 5: Solve for x
    x = 68,323,109.99/8,683.68
  6. Step 6: Final answer
    x = 7,867.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.