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Finding the Fourth Proportional to 59,320.80, 89,029.80 and 57,376.80

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Solution

The fourth proportional to 59,320.80, 89,029.80 and 57,376.80 is: 86,112.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,320.80 : 89,029.80 = 57,376.80 : x
  2. Step 2: Convert to fraction form
    59,320.80/89,029.80 = 57,376.80/x
  3. Step 3: Cross multiply
    59,320.80x = 89,029.80 × 57,376.80
  4. Step 4: Simplify right side
    59,320.80x = 5,108,245,028.64
  5. Step 5: Solve for x
    x = 5,108,245,028.64/59,320.80
  6. Step 6: Final answer
    x = 86,112.21

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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.