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Finding the Fourth Proportional to 69,045.94, 103,346.16 and 35,720.11

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Solution

The fourth proportional to 69,045.94, 103,346.16 and 35,720.11 is: 53,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,045.94 : 103,346.16 = 35,720.11 : x
  2. Step 2: Convert to fraction form
    69,045.94/103,346.16 = 35,720.11/x
  3. Step 3: Cross multiply
    69,045.94x = 103,346.16 × 35,720.11
  4. Step 4: Simplify right side
    69,045.94x = 3,691,536,203.28
  5. Step 5: Solve for x
    x = 3,691,536,203.28/69,045.94
  6. Step 6: Final answer
    x = 53,464.93

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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.