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Finding the Fourth Proportional to 227,999.70, 319,986.90 and 227,999.70

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Solution

The fourth proportional to 227,999.70, 319,986.90 and 227,999.70 is: 319,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,999.70 : 319,986.90 = 227,999.70 : x
  2. Step 2: Convert to fraction form
    227,999.70/319,986.90 = 227,999.70/x
  3. Step 3: Cross multiply
    227,999.70x = 319,986.90 × 227,999.70
  4. Step 4: Simplify right side
    227,999.70x = 72,956,917,203.93
  5. Step 5: Solve for x
    x = 72,956,917,203.93/227,999.70
  6. Step 6: Final answer
    x = 319,986.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.