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Finding the Fourth Proportional to 436,603.10, 654,904.65 and 384,115.10

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Solution

The fourth proportional to 436,603.10, 654,904.65 and 384,115.10 is: 576,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,603.10 : 654,904.65 = 384,115.10 : x
  2. Step 2: Convert to fraction form
    436,603.10/654,904.65 = 384,115.10/x
  3. Step 3: Cross multiply
    436,603.10x = 654,904.65 × 384,115.10
  4. Step 4: Simplify right side
    436,603.10x = 251,558,765,125.22
  5. Step 5: Solve for x
    x = 251,558,765,125.22/436,603.10
  6. Step 6: Final answer
    x = 576,172.65

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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.