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Finding the Fourth Proportional to 415,673.20, 623,693.40 and 202,322.80

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Solution

The fourth proportional to 415,673.20, 623,693.40 and 202,322.80 is: 303,573.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,673.20 : 623,693.40 = 202,322.80 : x
  2. Step 2: Convert to fraction form
    415,673.20/623,693.40 = 202,322.80/x
  3. Step 3: Cross multiply
    415,673.20x = 623,693.40 × 202,322.80
  4. Step 4: Simplify right side
    415,673.20x = 126,187,395,029.52
  5. Step 5: Solve for x
    x = 126,187,395,029.52/415,673.20
  6. Step 6: Final answer
    x = 303,573.56

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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.