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Finding the Fourth Proportional to 104,643.64, 142,476.22 and 104,311.48

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Solution

The fourth proportional to 104,643.64, 142,476.22 and 104,311.48 is: 142,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.64 : 142,476.22 = 104,311.48 : x
  2. Step 2: Convert to fraction form
    104,643.64/142,476.22 = 104,311.48/x
  3. Step 3: Cross multiply
    104,643.64x = 142,476.22 × 104,311.48
  4. Step 4: Simplify right side
    104,643.64x = 14,861,905,373.01
  5. Step 5: Solve for x
    x = 14,861,905,373.01/104,643.64
  6. Step 6: Final answer
    x = 142,023.97

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.