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Finding the Fourth Proportional to 276,365.70, 413,564.40 and 191,728.80

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Solution

The fourth proportional to 276,365.70, 413,564.40 and 191,728.80 is: 286,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,365.70 : 413,564.40 = 191,728.80 : x
  2. Step 2: Convert to fraction form
    276,365.70/413,564.40 = 191,728.80/x
  3. Step 3: Cross multiply
    276,365.70x = 413,564.40 × 191,728.80
  4. Step 4: Simplify right side
    276,365.70x = 79,292,206,134.72
  5. Step 5: Solve for x
    x = 79,292,206,134.72/276,365.70
  6. Step 6: Final answer
    x = 286,910.45

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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.