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Finding the Fourth Proportional to 113,565, 170,218.29 and 69,093.72

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Solution

The fourth proportional to 113,565, 170,218.29 and 69,093.72 is: 103,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,565 : 170,218.29 = 69,093.72 : x
  2. Step 2: Convert to fraction form
    113,565/170,218.29 = 69,093.72/x
  3. Step 3: Cross multiply
    113,565x = 170,218.29 × 69,093.72
  4. Step 4: Simplify right side
    113,565x = 11,761,014,868.14
  5. Step 5: Solve for x
    x = 11,761,014,868.14/113,565
  6. Step 6: Final answer
    x = 103,561.97

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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.