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Finding the Fourth Proportional to 190,486.30, 285,729.46 and 64,115.97

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Solution

The fourth proportional to 190,486.30, 285,729.46 and 64,115.97 is: 96,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,486.30 : 285,729.46 = 64,115.97 : x
  2. Step 2: Convert to fraction form
    190,486.30/285,729.46 = 64,115.97/x
  3. Step 3: Cross multiply
    190,486.30x = 285,729.46 × 64,115.97
  4. Step 4: Simplify right side
    190,486.30x = 18,319,820,926.00
  5. Step 5: Solve for x
    x = 18,319,820,926.00/190,486.30
  6. Step 6: Final answer
    x = 96,173.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.