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Finding the Fourth Proportional to 354,993, 489,891.18 and 193,848.36

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Solution

The fourth proportional to 354,993, 489,891.18 and 193,848.36 is: 267,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,993 : 489,891.18 = 193,848.36 : x
  2. Step 2: Convert to fraction form
    354,993/489,891.18 = 193,848.36/x
  3. Step 3: Cross multiply
    354,993x = 489,891.18 × 193,848.36
  4. Step 4: Simplify right side
    354,993x = 94,964,601,821.46
  5. Step 5: Solve for x
    x = 94,964,601,821.46/354,993
  6. Step 6: Final answer
    x = 267,511.20

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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.