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Finding the Fourth Proportional to 381,598.40, 571,936.80 and 194,513.60

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Solution

The fourth proportional to 381,598.40, 571,936.80 and 194,513.60 is: 291,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,598.40 : 571,936.80 = 194,513.60 : x
  2. Step 2: Convert to fraction form
    381,598.40/571,936.80 = 194,513.60/x
  3. Step 3: Cross multiply
    381,598.40x = 571,936.80 × 194,513.60
  4. Step 4: Simplify right side
    381,598.40x = 111,249,485,940.48
  5. Step 5: Solve for x
    x = 111,249,485,940.48/381,598.40
  6. Step 6: Final answer
    x = 291,535.51

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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.