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Finding the Fourth Proportional to 417,699.63, 576,462.78 and 245,531.30

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Solution

The fourth proportional to 417,699.63, 576,462.78 and 245,531.30 is: 338,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,699.63 : 576,462.78 = 245,531.30 : x
  2. Step 2: Convert to fraction form
    417,699.63/576,462.78 = 245,531.30/x
  3. Step 3: Cross multiply
    417,699.63x = 576,462.78 × 245,531.30
  4. Step 4: Simplify right side
    417,699.63x = 141,539,652,892.70
  5. Step 5: Solve for x
    x = 141,539,652,892.70/417,699.63
  6. Step 6: Final answer
    x = 338,855.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.