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Finding the Fourth Proportional to 561,831.45, 842,771.79 and 162,512.59

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Solution

The fourth proportional to 561,831.45, 842,771.79 and 162,512.59 is: 243,776.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,831.45 : 842,771.79 = 162,512.59 : x
  2. Step 2: Convert to fraction form
    561,831.45/842,771.79 = 162,512.59/x
  3. Step 3: Cross multiply
    561,831.45x = 842,771.79 × 162,512.59
  4. Step 4: Simplify right side
    561,831.45x = 136,961,026,371.84
  5. Step 5: Solve for x
    x = 136,961,026,371.84/561,831.45
  6. Step 6: Final answer
    x = 243,776.01

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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.