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Finding the Fourth Proportional to 73,121.06, 109,667.72 and 35,643.44

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Solution

The fourth proportional to 73,121.06, 109,667.72 and 35,643.44 is: 53,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,121.06 : 109,667.72 = 35,643.44 : x
  2. Step 2: Convert to fraction form
    73,121.06/109,667.72 = 35,643.44/x
  3. Step 3: Cross multiply
    73,121.06x = 109,667.72 × 35,643.44
  4. Step 4: Simplify right side
    73,121.06x = 3,908,935,161.03
  5. Step 5: Solve for x
    x = 3,908,935,161.03/73,121.06
  6. Step 6: Final answer
    x = 53,458.40

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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.