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Finding the Fourth Proportional to 368,996.80, 553,495.20 and 201,035.20

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Solution

The fourth proportional to 368,996.80, 553,495.20 and 201,035.20 is: 301,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,996.80 : 553,495.20 = 201,035.20 : x
  2. Step 2: Convert to fraction form
    368,996.80/553,495.20 = 201,035.20/x
  3. Step 3: Cross multiply
    368,996.80x = 553,495.20 × 201,035.20
  4. Step 4: Simplify right side
    368,996.80x = 111,272,018,231.04
  5. Step 5: Solve for x
    x = 111,272,018,231.04/368,996.80
  6. Step 6: Final answer
    x = 301,552.80

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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.