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Finding the Fourth Proportional to 57,065.59, 85,581.66 and 21,501.25

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Solution

The fourth proportional to 57,065.59, 85,581.66 and 21,501.25 is: 32,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,065.59 : 85,581.66 = 21,501.25 : x
  2. Step 2: Convert to fraction form
    57,065.59/85,581.66 = 21,501.25/x
  3. Step 3: Cross multiply
    57,065.59x = 85,581.66 × 21,501.25
  4. Step 4: Simplify right side
    57,065.59x = 1,840,112,667.08
  5. Step 5: Solve for x
    x = 1,840,112,667.08/57,065.59
  6. Step 6: Final answer
    x = 32,245.57

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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.