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Finding the Fourth Proportional to 14,554.20, 21,840.87 and 7,985.01

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Solution

The fourth proportional to 14,554.20, 21,840.87 and 7,985.01 is: 11,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,554.20 : 21,840.87 = 7,985.01 : x
  2. Step 2: Convert to fraction form
    14,554.20/21,840.87 = 7,985.01/x
  3. Step 3: Cross multiply
    14,554.20x = 21,840.87 × 7,985.01
  4. Step 4: Simplify right side
    14,554.20x = 174,399,565.36
  5. Step 5: Solve for x
    x = 174,399,565.36/14,554.20
  6. Step 6: Final answer
    x = 11,982.77

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1.5x scale

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.