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Finding the Fourth Proportional to 119,313.20, 164,653.28 and 64,865.48

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Solution

The fourth proportional to 119,313.20, 164,653.28 and 64,865.48 is: 89,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,313.20 : 164,653.28 = 64,865.48 : x
  2. Step 2: Convert to fraction form
    119,313.20/164,653.28 = 64,865.48/x
  3. Step 3: Cross multiply
    119,313.20x = 164,653.28 × 64,865.48
  4. Step 4: Simplify right side
    119,313.20x = 10,680,314,040.77
  5. Step 5: Solve for x
    x = 10,680,314,040.77/119,313.20
  6. Step 6: Final answer
    x = 89,514.94

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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.