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Finding the Fourth Proportional to 354,365.28, 489,015.09 and 193,223.34

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Solution

The fourth proportional to 354,365.28, 489,015.09 and 193,223.34 is: 266,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,365.28 : 489,015.09 = 193,223.34 : x
  2. Step 2: Convert to fraction form
    354,365.28/489,015.09 = 193,223.34/x
  3. Step 3: Cross multiply
    354,365.28x = 489,015.09 × 193,223.34
  4. Step 4: Simplify right side
    354,365.28x = 94,489,129,000.20
  5. Step 5: Solve for x
    x = 94,489,129,000.20/354,365.28
  6. Step 6: Final answer
    x = 266,643.30

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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.