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Finding the Fourth Proportional to 69,079.11, 103,483.06 and 35,820.91

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Solution

The fourth proportional to 69,079.11, 103,483.06 and 35,820.91 is: 53,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,079.11 : 103,483.06 = 35,820.91 : x
  2. Step 2: Convert to fraction form
    69,079.11/103,483.06 = 35,820.91/x
  3. Step 3: Cross multiply
    69,079.11x = 103,483.06 × 35,820.91
  4. Step 4: Simplify right side
    69,079.11x = 3,706,857,378.78
  5. Step 5: Solve for x
    x = 3,706,857,378.78/69,079.11
  6. Step 6: Final answer
    x = 53,661.05

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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.