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Finding the Fourth Proportional to 403,322.25, 604,979.25 and 103,801.66

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Solution

The fourth proportional to 403,322.25, 604,979.25 and 103,801.66 is: 155,701.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,322.25 : 604,979.25 = 103,801.66 : x
  2. Step 2: Convert to fraction form
    403,322.25/604,979.25 = 103,801.66/x
  3. Step 3: Cross multiply
    403,322.25x = 604,979.25 × 103,801.66
  4. Step 4: Simplify right side
    403,322.25x = 62,797,851,171.78
  5. Step 5: Solve for x
    x = 62,797,851,171.78/403,322.25
  6. Step 6: Final answer
    x = 155,701.43

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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.