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Finding the Fourth Proportional to 70,720.48, 106,080.72 and 33,672.16

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Solution

The fourth proportional to 70,720.48, 106,080.72 and 33,672.16 is: 50,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,720.48 : 106,080.72 = 33,672.16 : x
  2. Step 2: Convert to fraction form
    70,720.48/106,080.72 = 33,672.16/x
  3. Step 3: Cross multiply
    70,720.48x = 106,080.72 × 33,672.16
  4. Step 4: Simplify right side
    70,720.48x = 3,571,966,976.76
  5. Step 5: Solve for x
    x = 3,571,966,976.76/70,720.48
  6. Step 6: Final answer
    x = 50,508.24

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1.5x scale

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.