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Finding the Fourth Proportional to 105,392.52, 158,087.92 and 43,019.28

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Solution

The fourth proportional to 105,392.52, 158,087.92 and 43,019.28 is: 64,528.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.52 : 158,087.92 = 43,019.28 : x
  2. Step 2: Convert to fraction form
    105,392.52/158,087.92 = 43,019.28/x
  3. Step 3: Cross multiply
    105,392.52x = 158,087.92 × 43,019.28
  4. Step 4: Simplify right side
    105,392.52x = 6,800,828,495.10
  5. Step 5: Solve for x
    x = 6,800,828,495.10/105,392.52
  6. Step 6: Final answer
    x = 64,528.57

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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.