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Finding the Fourth Proportional to 124,663.71, 186,995.55 and 31,169.46

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Solution

The fourth proportional to 124,663.71, 186,995.55 and 31,169.46 is: 46,754.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,663.71 : 186,995.55 = 31,169.46 : x
  2. Step 2: Convert to fraction form
    124,663.71/186,995.55 = 31,169.46/x
  3. Step 3: Cross multiply
    124,663.71x = 186,995.55 × 31,169.46
  4. Step 4: Simplify right side
    124,663.71x = 5,828,550,315.90
  5. Step 5: Solve for x
    x = 5,828,550,315.90/124,663.71
  6. Step 6: Final answer
    x = 46,754.19

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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.