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Finding the Fourth Proportional to 186,557.36, 279,864.12 and 66,605.36

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Solution

The fourth proportional to 186,557.36, 279,864.12 and 66,605.36 is: 99,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,557.36 : 279,864.12 = 66,605.36 : x
  2. Step 2: Convert to fraction form
    186,557.36/279,864.12 = 66,605.36/x
  3. Step 3: Cross multiply
    186,557.36x = 279,864.12 × 66,605.36
  4. Step 4: Simplify right side
    186,557.36x = 18,640,450,463.68
  5. Step 5: Solve for x
    x = 18,640,450,463.68/186,557.36
  6. Step 6: Final answer
    x = 99,918.07

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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.