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Finding the Fourth Proportional to 56,958.53, 85,437.81 and 21,873.60

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Solution

The fourth proportional to 56,958.53, 85,437.81 and 21,873.60 is: 32,810.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,958.53 : 85,437.81 = 21,873.60 : x
  2. Step 2: Convert to fraction form
    56,958.53/85,437.81 = 21,873.60/x
  3. Step 3: Cross multiply
    56,958.53x = 85,437.81 × 21,873.60
  4. Step 4: Simplify right side
    56,958.53x = 1,868,832,480.82
  5. Step 5: Solve for x
    x = 1,868,832,480.82/56,958.53
  6. Step 6: Final answer
    x = 32,810.41

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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.