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Finding the Fourth Proportional to 639,225.35, 958,672.17 and 189,840.59

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Solution

The fourth proportional to 639,225.35, 958,672.17 and 189,840.59 is: 284,711.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,225.35 : 958,672.17 = 189,840.59 : x
  2. Step 2: Convert to fraction form
    639,225.35/958,672.17 = 189,840.59/x
  3. Step 3: Cross multiply
    639,225.35x = 958,672.17 × 189,840.59
  4. Step 4: Simplify right side
    639,225.35x = 181,994,885,576.02
  5. Step 5: Solve for x
    x = 181,994,885,576.02/639,225.35
  6. Step 6: Final answer
    x = 284,711.62

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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.