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Finding the Fourth Proportional to 56,699.74, 78,240.56 and 32,828.03

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Solution

The fourth proportional to 56,699.74, 78,240.56 and 32,828.03 is: 45,299.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,699.74 : 78,240.56 = 32,828.03 : x
  2. Step 2: Convert to fraction form
    56,699.74/78,240.56 = 32,828.03/x
  3. Step 3: Cross multiply
    56,699.74x = 78,240.56 × 32,828.03
  4. Step 4: Simplify right side
    56,699.74x = 2,568,482,895.55
  5. Step 5: Solve for x
    x = 2,568,482,895.55/56,699.74
  6. Step 6: Final answer
    x = 45,299.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.