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Finding the Fourth Proportional to 415,487.39, 623,050.08 and 220,697.97

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Solution

The fourth proportional to 415,487.39, 623,050.08 and 220,697.97 is: 330,950.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,487.39 : 623,050.08 = 220,697.97 : x
  2. Step 2: Convert to fraction form
    415,487.39/623,050.08 = 220,697.97/x
  3. Step 3: Cross multiply
    415,487.39x = 623,050.08 × 220,697.97
  4. Step 4: Simplify right side
    415,487.39x = 137,505,884,813.82
  5. Step 5: Solve for x
    x = 137,505,884,813.82/415,487.39
  6. Step 6: Final answer
    x = 330,950.80

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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.