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Finding the Fourth Proportional to 119,532.72, 164,955.60 and 65,816.40

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Solution

The fourth proportional to 119,532.72, 164,955.60 and 65,816.40 is: 90,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,532.72 : 164,955.60 = 65,816.40 : x
  2. Step 2: Convert to fraction form
    119,532.72/164,955.60 = 65,816.40/x
  3. Step 3: Cross multiply
    119,532.72x = 164,955.60 × 65,816.40
  4. Step 4: Simplify right side
    119,532.72x = 10,856,783,751.84
  5. Step 5: Solve for x
    x = 10,856,783,751.84/119,532.72
  6. Step 6: Final answer
    x = 90,826.88

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1.5x scale

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.