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Finding the Fourth Proportional to 59,980.84, 90,029.57 and 28,837.96

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Solution

The fourth proportional to 59,980.84, 90,029.57 and 28,837.96 is: 43,284.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,980.84 : 90,029.57 = 28,837.96 : x
  2. Step 2: Convert to fraction form
    59,980.84/90,029.57 = 28,837.96/x
  3. Step 3: Cross multiply
    59,980.84x = 90,029.57 × 28,837.96
  4. Step 4: Simplify right side
    59,980.84x = 2,596,269,138.48
  5. Step 5: Solve for x
    x = 2,596,269,138.48/59,980.84
  6. Step 6: Final answer
    x = 43,284.97

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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.