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Finding the Fourth Proportional to 368,869.20, 553,303.80 and 361,093.20

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Solution

The fourth proportional to 368,869.20, 553,303.80 and 361,093.20 is: 541,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,869.20 : 553,303.80 = 361,093.20 : x
  2. Step 2: Convert to fraction form
    368,869.20/553,303.80 = 361,093.20/x
  3. Step 3: Cross multiply
    368,869.20x = 553,303.80 × 361,093.20
  4. Step 4: Simplify right side
    368,869.20x = 199,794,239,714.16
  5. Step 5: Solve for x
    x = 199,794,239,714.16/368,869.20
  6. Step 6: Final answer
    x = 541,639.80

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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.