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Finding the Fourth Proportional to 243,907.35, 336,583.70 and 135,016.44

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Solution

The fourth proportional to 243,907.35, 336,583.70 and 135,016.44 is: 186,318.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,907.35 : 336,583.70 = 135,016.44 : x
  2. Step 2: Convert to fraction form
    243,907.35/336,583.70 = 135,016.44/x
  3. Step 3: Cross multiply
    243,907.35x = 336,583.70 × 135,016.44
  4. Step 4: Simplify right side
    243,907.35x = 45,444,332,264.54
  5. Step 5: Solve for x
    x = 45,444,332,264.54/243,907.35
  6. Step 6: Final answer
    x = 186,318.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.