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Finding the Fourth Proportional to 192,359.51, 288,572.30 and 85,781.33

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Solution

The fourth proportional to 192,359.51, 288,572.30 and 85,781.33 is: 128,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,359.51 : 288,572.30 = 85,781.33 : x
  2. Step 2: Convert to fraction form
    192,359.51/288,572.30 = 85,781.33/x
  3. Step 3: Cross multiply
    192,359.51x = 288,572.30 × 85,781.33
  4. Step 4: Simplify right side
    192,359.51x = 24,754,115,266.25
  5. Step 5: Solve for x
    x = 24,754,115,266.25/192,359.51
  6. Step 6: Final answer
    x = 128,686.72

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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.