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Finding the Fourth Proportional to 104,554.56, 156,724.96 and 45,340.32

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Solution

The fourth proportional to 104,554.56, 156,724.96 and 45,340.32 is: 67,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,554.56 : 156,724.96 = 45,340.32 : x
  2. Step 2: Convert to fraction form
    104,554.56/156,724.96 = 45,340.32/x
  3. Step 3: Cross multiply
    104,554.56x = 156,724.96 × 45,340.32
  4. Step 4: Simplify right side
    104,554.56x = 7,105,959,838.39
  5. Step 5: Solve for x
    x = 7,105,959,838.39/104,554.56
  6. Step 6: Final answer
    x = 67,964.13

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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.