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Finding the Fourth Proportional to 124,257.81, 186,386.72 and 30,763.56

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Solution

The fourth proportional to 124,257.81, 186,386.72 and 30,763.56 is: 46,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,257.81 : 186,386.72 = 30,763.56 : x
  2. Step 2: Convert to fraction form
    124,257.81/186,386.72 = 30,763.56/x
  3. Step 3: Cross multiply
    124,257.81x = 186,386.72 × 30,763.56
  4. Step 4: Simplify right side
    124,257.81x = 5,733,919,043.92
  5. Step 5: Solve for x
    x = 5,733,919,043.92/124,257.81
  6. Step 6: Final answer
    x = 46,145.34

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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.