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Finding the Fourth Proportional to 8,398.62, 11,590.14 and 4,621.67

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Solution

The fourth proportional to 8,398.62, 11,590.14 and 4,621.67 is: 6,377.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.62 : 11,590.14 = 4,621.67 : x
  2. Step 2: Convert to fraction form
    8,398.62/11,590.14 = 4,621.67/x
  3. Step 3: Cross multiply
    8,398.62x = 11,590.14 × 4,621.67
  4. Step 4: Simplify right side
    8,398.62x = 53,565,805.18
  5. Step 5: Solve for x
    x = 53,565,805.18/8,398.62
  6. Step 6: Final answer
    x = 6,377.93

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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.