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Finding the Fourth Proportional to 639,030.80, 958,682.28 and 189,752.96

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Solution

The fourth proportional to 639,030.80, 958,682.28 and 189,752.96 is: 284,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,030.80 : 958,682.28 = 189,752.96 : x
  2. Step 2: Convert to fraction form
    639,030.80/958,682.28 = 189,752.96/x
  3. Step 3: Cross multiply
    639,030.80x = 958,682.28 × 189,752.96
  4. Step 4: Simplify right side
    639,030.80x = 181,912,800,329.55
  5. Step 5: Solve for x
    x = 181,912,800,329.55/639,030.80
  6. Step 6: Final answer
    x = 284,669.85

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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.