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Finding the Fourth Proportional to 319,883.46, 441,536.90 and 197,413.28

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Solution

The fourth proportional to 319,883.46, 441,536.90 and 197,413.28 is: 272,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,883.46 : 441,536.90 = 197,413.28 : x
  2. Step 2: Convert to fraction form
    319,883.46/441,536.90 = 197,413.28/x
  3. Step 3: Cross multiply
    319,883.46x = 441,536.90 × 197,413.28
  4. Step 4: Simplify right side
    319,883.46x = 87,165,247,670.03
  5. Step 5: Solve for x
    x = 87,165,247,670.03/319,883.46
  6. Step 6: Final answer
    x = 272,490.64

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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.