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Finding the Fourth Proportional to 67,018.64, 100,530.38 and 33,720.59

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Solution

The fourth proportional to 67,018.64, 100,530.38 and 33,720.59 is: 50,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,018.64 : 100,530.38 = 33,720.59 : x
  2. Step 2: Convert to fraction form
    67,018.64/100,530.38 = 33,720.59/x
  3. Step 3: Cross multiply
    67,018.64x = 100,530.38 × 33,720.59
  4. Step 4: Simplify right side
    67,018.64x = 3,389,943,055.27
  5. Step 5: Solve for x
    x = 3,389,943,055.27/67,018.64
  6. Step 6: Final answer
    x = 50,582.10

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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.