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Finding the Fourth Proportional to 605,417.40, 908,126.10 and 381,468.60

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Solution

The fourth proportional to 605,417.40, 908,126.10 and 381,468.60 is: 572,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,417.40 : 908,126.10 = 381,468.60 : x
  2. Step 2: Convert to fraction form
    605,417.40/908,126.10 = 381,468.60/x
  3. Step 3: Cross multiply
    605,417.40x = 908,126.10 × 381,468.60
  4. Step 4: Simplify right side
    605,417.40x = 346,421,591,990.46
  5. Step 5: Solve for x
    x = 346,421,591,990.46/605,417.40
  6. Step 6: Final answer
    x = 572,202.90

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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.