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Finding the Fourth Proportional to 74,933.30, 112,069.29 and 66,671.30

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Solution

The fourth proportional to 74,933.30, 112,069.29 and 66,671.30 is: 99,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,933.30 : 112,069.29 = 66,671.30 : x
  2. Step 2: Convert to fraction form
    74,933.30/112,069.29 = 66,671.30/x
  3. Step 3: Cross multiply
    74,933.30x = 112,069.29 × 66,671.30
  4. Step 4: Simplify right side
    74,933.30x = 7,471,805,254.38
  5. Step 5: Solve for x
    x = 7,471,805,254.38/74,933.30
  6. Step 6: Final answer
    x = 99,712.75

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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.