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Finding the Fourth Proportional to 124,663.97, 186,995.94 and 31,169.72

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Solution

The fourth proportional to 124,663.97, 186,995.94 and 31,169.72 is: 46,754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,663.97 : 186,995.94 = 31,169.72 : x
  2. Step 2: Convert to fraction form
    124,663.97/186,995.94 = 31,169.72/x
  3. Step 3: Cross multiply
    124,663.97x = 186,995.94 × 31,169.72
  4. Step 4: Simplify right side
    124,663.97x = 5,828,611,090.94
  5. Step 5: Solve for x
    x = 5,828,611,090.94/124,663.97
  6. Step 6: Final answer
    x = 46,754.58

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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.