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Finding the Fourth Proportional to 55,860.47, 83,764.31 and 20,297.00

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Solution

The fourth proportional to 55,860.47, 83,764.31 and 20,297.00 is: 30,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,860.47 : 83,764.31 = 20,297.00 : x
  2. Step 2: Convert to fraction form
    55,860.47/83,764.31 = 20,297.00/x
  3. Step 3: Cross multiply
    55,860.47x = 83,764.31 × 20,297.00
  4. Step 4: Simplify right side
    55,860.47x = 1,700,163,679.76
  5. Step 5: Solve for x
    x = 1,700,163,679.76/55,860.47
  6. Step 6: Final answer
    x = 30,435.90

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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.