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Finding the Fourth Proportional to 353,521.78, 487,870.31 and 192,387.22

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Solution

The fourth proportional to 353,521.78, 487,870.31 and 192,387.22 is: 265,499.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,521.78 : 487,870.31 = 192,387.22 : x
  2. Step 2: Convert to fraction form
    353,521.78/487,870.31 = 192,387.22/x
  3. Step 3: Cross multiply
    353,521.78x = 487,870.31 × 192,387.22
  4. Step 4: Simplify right side
    353,521.78x = 93,860,009,260.15
  5. Step 5: Solve for x
    x = 93,860,009,260.15/353,521.78
  6. Step 6: Final answer
    x = 265,499.94

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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.