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Finding the Fourth Proportional to 354,844.56, 489,678.30 and 193,699.11

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Solution

The fourth proportional to 354,844.56, 489,678.30 and 193,699.11 is: 267,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,844.56 : 489,678.30 = 193,699.11 : x
  2. Step 2: Convert to fraction form
    354,844.56/489,678.30 = 193,699.11/x
  3. Step 3: Cross multiply
    354,844.56x = 489,678.30 × 193,699.11
  4. Step 4: Simplify right side
    354,844.56x = 94,850,250,896.31
  5. Step 5: Solve for x
    x = 94,850,250,896.31/354,844.56
  6. Step 6: Final answer
    x = 267,300.85

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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.