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Finding the Fourth Proportional to 55,879.92, 83,801.96 and 18,431.58

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Solution

The fourth proportional to 55,879.92, 83,801.96 and 18,431.58 is: 27,641.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.92 : 83,801.96 = 18,431.58 : x
  2. Step 2: Convert to fraction form
    55,879.92/83,801.96 = 18,431.58/x
  3. Step 3: Cross multiply
    55,879.92x = 83,801.96 × 18,431.58
  4. Step 4: Simplify right side
    55,879.92x = 1,544,602,529.90
  5. Step 5: Solve for x
    x = 1,544,602,529.90/55,879.92
  6. Step 6: Final answer
    x = 27,641.46

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1.5x scale

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.