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Finding the Fourth Proportional to 14,343.21, 21,520.89 and 7,773.93

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Solution

The fourth proportional to 14,343.21, 21,520.89 and 7,773.93 is: 11,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,343.21 : 21,520.89 = 7,773.93 : x
  2. Step 2: Convert to fraction form
    14,343.21/21,520.89 = 7,773.93/x
  3. Step 3: Cross multiply
    14,343.21x = 21,520.89 × 7,773.93
  4. Step 4: Simplify right side
    14,343.21x = 167,301,892.40
  5. Step 5: Solve for x
    x = 167,301,892.40/14,343.21
  6. Step 6: Final answer
    x = 11,664.19

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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.