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Finding the Fourth Proportional to 53,662.69, 74,055 and 29,791.63

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Solution

The fourth proportional to 53,662.69, 74,055 and 29,791.63 is: 41,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,662.69 : 74,055 = 29,791.63 : x
  2. Step 2: Convert to fraction form
    53,662.69/74,055 = 29,791.63/x
  3. Step 3: Cross multiply
    53,662.69x = 74,055 × 29,791.63
  4. Step 4: Simplify right side
    53,662.69x = 2,206,219,159.65
  5. Step 5: Solve for x
    x = 2,206,219,159.65/53,662.69
  6. Step 6: Final answer
    x = 41,112.72

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1.5x scale

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.