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Finding the Fourth Proportional to 639,595.76, 959,306.10 and 190,385.96

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Solution

The fourth proportional to 639,595.76, 959,306.10 and 190,385.96 is: 285,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,595.76 : 959,306.10 = 190,385.96 : x
  2. Step 2: Convert to fraction form
    639,595.76/959,306.10 = 190,385.96/x
  3. Step 3: Cross multiply
    639,595.76x = 959,306.10 × 190,385.96
  4. Step 4: Simplify right side
    639,595.76x = 182,638,412,782.36
  5. Step 5: Solve for x
    x = 182,638,412,782.36/639,595.76
  6. Step 6: Final answer
    x = 285,552.88

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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.