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Finding the Fourth Proportional to 384,028.80, 576,043.20 and 368,476.80

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Solution

The fourth proportional to 384,028.80, 576,043.20 and 368,476.80 is: 552,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,028.80 : 576,043.20 = 368,476.80 : x
  2. Step 2: Convert to fraction form
    384,028.80/576,043.20 = 368,476.80/x
  3. Step 3: Cross multiply
    384,028.80x = 576,043.20 × 368,476.80
  4. Step 4: Simplify right side
    384,028.80x = 212,258,554,997.76
  5. Step 5: Solve for x
    x = 212,258,554,997.76/384,028.80
  6. Step 6: Final answer
    x = 552,715.20

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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.