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Finding the Fourth Proportional to 119,374.52, 164,738.18 and 65,660.40

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Solution

The fourth proportional to 119,374.52, 164,738.18 and 65,660.40 is: 90,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,374.52 : 164,738.18 = 65,660.40 : x
  2. Step 2: Convert to fraction form
    119,374.52/164,738.18 = 65,660.40/x
  3. Step 3: Cross multiply
    119,374.52x = 164,738.18 × 65,660.40
  4. Step 4: Simplify right side
    119,374.52x = 10,816,774,794.07
  5. Step 5: Solve for x
    x = 10,816,774,794.07/119,374.52
  6. Step 6: Final answer
    x = 90,612.09

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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.