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Finding the Fourth Proportional to 9,909.79, 14,866.21 and 3,335.46

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Solution

The fourth proportional to 9,909.79, 14,866.21 and 3,335.46 is: 5,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,909.79 : 14,866.21 = 3,335.46 : x
  2. Step 2: Convert to fraction form
    9,909.79/14,866.21 = 3,335.46/x
  3. Step 3: Cross multiply
    9,909.79x = 14,866.21 × 3,335.46
  4. Step 4: Simplify right side
    9,909.79x = 49,585,648.81
  5. Step 5: Solve for x
    x = 49,585,648.81/9,909.79
  6. Step 6: Final answer
    x = 5,003.70

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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.