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Finding the Fourth Proportional to 69,335.51, 103,799.14 and 42,955.43

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Solution

The fourth proportional to 69,335.51, 103,799.14 and 42,955.43 is: 64,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,335.51 : 103,799.14 = 42,955.43 : x
  2. Step 2: Convert to fraction form
    69,335.51/103,799.14 = 42,955.43/x
  3. Step 3: Cross multiply
    69,335.51x = 103,799.14 × 42,955.43
  4. Step 4: Simplify right side
    69,335.51x = 4,458,736,692.33
  5. Step 5: Solve for x
    x = 4,458,736,692.33/69,335.51
  6. Step 6: Final answer
    x = 64,306.68

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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.