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Finding the Fourth Proportional to 438,805.89, 605,547.90 and 247,815.18

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Solution

The fourth proportional to 438,805.89, 605,547.90 and 247,815.18 is: 341,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,805.89 : 605,547.90 = 247,815.18 : x
  2. Step 2: Convert to fraction form
    438,805.89/605,547.90 = 247,815.18/x
  3. Step 3: Cross multiply
    438,805.89x = 605,547.90 × 247,815.18
  4. Step 4: Simplify right side
    438,805.89x = 150,063,961,837.12
  5. Step 5: Solve for x
    x = 150,063,961,837.12/438,805.89
  6. Step 6: Final answer
    x = 341,982.56

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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.