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Finding the Fourth Proportional to 186,532.80, 279,908.55 and 68,216.10

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Solution

The fourth proportional to 186,532.80, 279,908.55 and 68,216.10 is: 102,364.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,532.80 : 279,908.55 = 68,216.10 : x
  2. Step 2: Convert to fraction form
    186,532.80/279,908.55 = 68,216.10/x
  3. Step 3: Cross multiply
    186,532.80x = 279,908.55 × 68,216.10
  4. Step 4: Simplify right side
    186,532.80x = 19,094,269,637.66
  5. Step 5: Solve for x
    x = 19,094,269,637.66/186,532.80
  6. Step 6: Final answer
    x = 102,364.14

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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.