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Finding the Fourth Proportional to 14,355.75, 19,808.52 and 7,982.16

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Solution

The fourth proportional to 14,355.75, 19,808.52 and 7,982.16 is: 11,014.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.75 : 19,808.52 = 7,982.16 : x
  2. Step 2: Convert to fraction form
    14,355.75/19,808.52 = 7,982.16/x
  3. Step 3: Cross multiply
    14,355.75x = 19,808.52 × 7,982.16
  4. Step 4: Simplify right side
    14,355.75x = 158,114,676.96
  5. Step 5: Solve for x
    x = 158,114,676.96/14,355.75
  6. Step 6: Final answer
    x = 11,014.03

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1.5x scale

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.