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Finding the Fourth Proportional to 9,782.81, 14,671.14 and 3,207.46

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Solution

The fourth proportional to 9,782.81, 14,671.14 and 3,207.46 is: 4,810.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,782.81 : 14,671.14 = 3,207.46 : x
  2. Step 2: Convert to fraction form
    9,782.81/14,671.14 = 3,207.46/x
  3. Step 3: Cross multiply
    9,782.81x = 14,671.14 × 3,207.46
  4. Step 4: Simplify right side
    9,782.81x = 47,057,094.70
  5. Step 5: Solve for x
    x = 47,057,094.70/9,782.81
  6. Step 6: Final answer
    x = 4,810.18

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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.