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Finding the Fourth Proportional to 71,246.88, 106,818.48 and 43,564.32

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Solution

The fourth proportional to 71,246.88, 106,818.48 and 43,564.32 is: 65,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,246.88 : 106,818.48 = 43,564.32 : x
  2. Step 2: Convert to fraction form
    71,246.88/106,818.48 = 43,564.32/x
  3. Step 3: Cross multiply
    71,246.88x = 106,818.48 × 43,564.32
  4. Step 4: Simplify right side
    71,246.88x = 4,653,474,444.63
  5. Step 5: Solve for x
    x = 4,653,474,444.63/71,246.88
  6. Step 6: Final answer
    x = 65,314.78

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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.