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Finding the Fourth Proportional to 245,887.20, 368,830.80 and 162,781.20

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Solution

The fourth proportional to 245,887.20, 368,830.80 and 162,781.20 is: 244,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,887.20 : 368,830.80 = 162,781.20 : x
  2. Step 2: Convert to fraction form
    245,887.20/368,830.80 = 162,781.20/x
  3. Step 3: Cross multiply
    245,887.20x = 368,830.80 × 162,781.20
  4. Step 4: Simplify right side
    245,887.20x = 60,038,720,220.96
  5. Step 5: Solve for x
    x = 60,038,720,220.96/245,887.20
  6. Step 6: Final answer
    x = 244,171.80

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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.