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Finding the Fourth Proportional to 59,680.90, 89,550.15 and 42,112.90

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Solution

The fourth proportional to 59,680.90, 89,550.15 and 42,112.90 is: 63,189.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,680.90 : 89,550.15 = 42,112.90 : x
  2. Step 2: Convert to fraction form
    59,680.90/89,550.15 = 42,112.90/x
  3. Step 3: Cross multiply
    59,680.90x = 89,550.15 × 42,112.90
  4. Step 4: Simplify right side
    59,680.90x = 3,771,216,511.94
  5. Step 5: Solve for x
    x = 3,771,216,511.94/59,680.90
  6. Step 6: Final answer
    x = 63,189.67

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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.