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Finding the Fourth Proportional to 93,574.92, 129,138.66 and 87,276.36

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Solution

The fourth proportional to 93,574.92, 129,138.66 and 87,276.36 is: 120,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,574.92 : 129,138.66 = 87,276.36 : x
  2. Step 2: Convert to fraction form
    93,574.92/129,138.66 = 87,276.36/x
  3. Step 3: Cross multiply
    93,574.92x = 129,138.66 × 87,276.36
  4. Step 4: Simplify right side
    93,574.92x = 11,270,752,180.08
  5. Step 5: Solve for x
    x = 11,270,752,180.08/93,574.92
  6. Step 6: Final answer
    x = 120,446.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.