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Finding the Fourth Proportional to 639,258.84, 959,079.06 and 189,994.68

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Solution

The fourth proportional to 639,258.84, 959,079.06 and 189,994.68 is: 285,048.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,258.84 : 959,079.06 = 189,994.68 : x
  2. Step 2: Convert to fraction form
    639,258.84/959,079.06 = 189,994.68/x
  3. Step 3: Cross multiply
    639,258.84x = 959,079.06 × 189,994.68
  4. Step 4: Simplify right side
    639,258.84x = 182,219,919,099.40
  5. Step 5: Solve for x
    x = 182,219,919,099.40/639,258.84
  6. Step 6: Final answer
    x = 285,048.73

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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.