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Finding the Fourth Proportional to 115,528.40, 173,033.40 and 112,936.40

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Solution

The fourth proportional to 115,528.40, 173,033.40 and 112,936.40 is: 169,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,528.40 : 173,033.40 = 112,936.40 : x
  2. Step 2: Convert to fraction form
    115,528.40/173,033.40 = 112,936.40/x
  3. Step 3: Cross multiply
    115,528.40x = 173,033.40 × 112,936.40
  4. Step 4: Simplify right side
    115,528.40x = 19,541,769,275.76
  5. Step 5: Solve for x
    x = 19,541,769,275.76/115,528.40
  6. Step 6: Final answer
    x = 169,151.22

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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.