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Finding the Fourth Proportional to 226,965.15, 340,368.15 and 66,998.40

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Solution

The fourth proportional to 226,965.15, 340,368.15 and 66,998.40 is: 100,474.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,965.15 : 340,368.15 = 66,998.40 : x
  2. Step 2: Convert to fraction form
    226,965.15/340,368.15 = 66,998.40/x
  3. Step 3: Cross multiply
    226,965.15x = 340,368.15 × 66,998.40
  4. Step 4: Simplify right side
    226,965.15x = 22,804,121,460.96
  5. Step 5: Solve for x
    x = 22,804,121,460.96/226,965.15
  6. Step 6: Final answer
    x = 100,474.11

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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.