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Finding the Fourth Proportional to 45,579.70, 68,260.20 and 36,831.70

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Solution

The fourth proportional to 45,579.70, 68,260.20 and 36,831.70 is: 55,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,579.70 : 68,260.20 = 36,831.70 : x
  2. Step 2: Convert to fraction form
    45,579.70/68,260.20 = 36,831.70/x
  3. Step 3: Cross multiply
    45,579.70x = 68,260.20 × 36,831.70
  4. Step 4: Simplify right side
    45,579.70x = 2,514,139,208.34
  5. Step 5: Solve for x
    x = 2,514,139,208.34/45,579.70
  6. Step 6: Final answer
    x = 55,159.19

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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.