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Finding the Fourth Proportional to 353,923.21, 488,425.31 and 192,783.43

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Solution

The fourth proportional to 353,923.21, 488,425.31 and 192,783.43 is: 266,047.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,923.21 : 488,425.31 = 192,783.43 : x
  2. Step 2: Convert to fraction form
    353,923.21/488,425.31 = 192,783.43/x
  3. Step 3: Cross multiply
    353,923.21x = 488,425.31 × 192,783.43
  4. Step 4: Simplify right side
    353,923.21x = 94,160,306,560.61
  5. Step 5: Solve for x
    x = 94,160,306,560.61/353,923.21
  6. Step 6: Final answer
    x = 266,047.28

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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.