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Finding the Fourth Proportional to 245,887.20, 368,744.40 and 112,831.20

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Solution

The fourth proportional to 245,887.20, 368,744.40 and 112,831.20 is: 169,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,887.20 : 368,744.40 = 112,831.20 : x
  2. Step 2: Convert to fraction form
    245,887.20/368,744.40 = 112,831.20/x
  3. Step 3: Cross multiply
    245,887.20x = 368,744.40 × 112,831.20
  4. Step 4: Simplify right side
    245,887.20x = 41,605,873,145.28
  5. Step 5: Solve for x
    x = 41,605,873,145.28/245,887.20
  6. Step 6: Final answer
    x = 169,207.15

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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.