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Finding the Fourth Proportional to 438,573.48, 605,197.62 and 247,605.72

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Solution

The fourth proportional to 438,573.48, 605,197.62 and 247,605.72 is: 341,676.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,573.48 : 605,197.62 = 247,605.72 : x
  2. Step 2: Convert to fraction form
    438,573.48/605,197.62 = 247,605.72/x
  3. Step 3: Cross multiply
    438,573.48x = 605,197.62 × 247,605.72
  4. Step 4: Simplify right side
    438,573.48x = 149,850,392,442.39
  5. Step 5: Solve for x
    x = 149,850,392,442.39/438,573.48
  6. Step 6: Final answer
    x = 341,676.82

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1.5x scale

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.