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Finding the Fourth Proportional to 60,739.71, 91,109.67 and 31,141.36

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Solution

The fourth proportional to 60,739.71, 91,109.67 and 31,141.36 is: 46,712.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,739.71 : 91,109.67 = 31,141.36 : x
  2. Step 2: Convert to fraction form
    60,739.71/91,109.67 = 31,141.36/x
  3. Step 3: Cross multiply
    60,739.71x = 91,109.67 × 31,141.36
  4. Step 4: Simplify right side
    60,739.71x = 2,837,279,032.95
  5. Step 5: Solve for x
    x = 2,837,279,032.95/60,739.71
  6. Step 6: Final answer
    x = 46,712.09

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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.