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Finding the Fourth Proportional to 368,390.53, 552,563.20 and 216,671.50

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Solution

The fourth proportional to 368,390.53, 552,563.20 and 216,671.50 is: 324,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,390.53 : 552,563.20 = 216,671.50 : x
  2. Step 2: Convert to fraction form
    368,390.53/552,563.20 = 216,671.50/x
  3. Step 3: Cross multiply
    368,390.53x = 552,563.20 × 216,671.50
  4. Step 4: Simplify right side
    368,390.53x = 119,724,697,388.80
  5. Step 5: Solve for x
    x = 119,724,697,388.80/368,390.53
  6. Step 6: Final answer
    x = 324,993.96

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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.