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Finding the Fourth Proportional to 44,294.04, 66,429.72 and 13,122

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Solution

The fourth proportional to 44,294.04, 66,429.72 and 13,122 is: 19,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,294.04 : 66,429.72 = 13,122 : x
  2. Step 2: Convert to fraction form
    44,294.04/66,429.72 = 13,122/x
  3. Step 3: Cross multiply
    44,294.04x = 66,429.72 × 13,122
  4. Step 4: Simplify right side
    44,294.04x = 871,690,785.84
  5. Step 5: Solve for x
    x = 871,690,785.84/44,294.04
  6. Step 6: Final answer
    x = 19,679.64

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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.