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Finding the Fourth Proportional to 55,390.80, 83,026.51 and 26,867.36

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Solution

The fourth proportional to 55,390.80, 83,026.51 and 26,867.36 is: 40,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390.80 : 83,026.51 = 26,867.36 : x
  2. Step 2: Convert to fraction form
    55,390.80/83,026.51 = 26,867.36/x
  3. Step 3: Cross multiply
    55,390.80x = 83,026.51 × 26,867.36
  4. Step 4: Simplify right side
    55,390.80x = 2,230,702,718.58
  5. Step 5: Solve for x
    x = 2,230,702,718.58/55,390.80
  6. Step 6: Final answer
    x = 40,272.08

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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.