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Finding the Fourth Proportional to 543,422.30, 815,133.45 and 403,454.30

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Solution

The fourth proportional to 543,422.30, 815,133.45 and 403,454.30 is: 605,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,422.30 : 815,133.45 = 403,454.30 : x
  2. Step 2: Convert to fraction form
    543,422.30/815,133.45 = 403,454.30/x
  3. Step 3: Cross multiply
    543,422.30x = 815,133.45 × 403,454.30
  4. Step 4: Simplify right side
    543,422.30x = 328,869,095,476.34
  5. Step 5: Solve for x
    x = 328,869,095,476.34/543,422.30
  6. Step 6: Final answer
    x = 605,181.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.