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Finding the Fourth Proportional to 77,762.71, 116,619.72 and 25,161.31

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Solution

The fourth proportional to 77,762.71, 116,619.72 and 25,161.31 is: 37,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,762.71 : 116,619.72 = 25,161.31 : x
  2. Step 2: Convert to fraction form
    77,762.71/116,619.72 = 25,161.31/x
  3. Step 3: Cross multiply
    77,762.71x = 116,619.72 × 25,161.31
  4. Step 4: Simplify right side
    77,762.71x = 2,934,304,927.03
  5. Step 5: Solve for x
    x = 2,934,304,927.03/77,762.71
  6. Step 6: Final answer
    x = 37,734.09

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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.