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Finding the Fourth Proportional to 14,398.85, 21,581.04 and 9,403.61

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Solution

The fourth proportional to 14,398.85, 21,581.04 and 9,403.61 is: 14,094.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,398.85 : 21,581.04 = 9,403.61 : x
  2. Step 2: Convert to fraction form
    14,398.85/21,581.04 = 9,403.61/x
  3. Step 3: Cross multiply
    14,398.85x = 21,581.04 × 9,403.61
  4. Step 4: Simplify right side
    14,398.85x = 202,939,610.91
  5. Step 5: Solve for x
    x = 202,939,610.91/14,398.85
  6. Step 6: Final answer
    x = 14,094.15

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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.