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Finding the Fourth Proportional to 8,865.96, 12,235.41 and 5,682.03

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Solution

The fourth proportional to 8,865.96, 12,235.41 and 5,682.03 is: 7,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.96 : 12,235.41 = 5,682.03 : x
  2. Step 2: Convert to fraction form
    8,865.96/12,235.41 = 5,682.03/x
  3. Step 3: Cross multiply
    8,865.96x = 12,235.41 × 5,682.03
  4. Step 4: Simplify right side
    8,865.96x = 69,521,966.68
  5. Step 5: Solve for x
    x = 69,521,966.68/8,865.96
  6. Step 6: Final answer
    x = 7,841.45

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Half scale
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Find fourth proportional to 8,866.96, 12,236.79 and 5,683.03
Similar ratio
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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.