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Finding the Fourth Proportional to 639,584.72, 959,289.64 and 190,374.92

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Solution

The fourth proportional to 639,584.72, 959,289.64 and 190,374.92 is: 285,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,584.72 : 959,289.64 = 190,374.92 : x
  2. Step 2: Convert to fraction form
    639,584.72/959,289.64 = 190,374.92/x
  3. Step 3: Cross multiply
    639,584.72x = 959,289.64 × 190,374.92
  4. Step 4: Simplify right side
    639,584.72x = 182,624,688,471.83
  5. Step 5: Solve for x
    x = 182,624,688,471.83/639,584.72
  6. Step 6: Final answer
    x = 285,536.35

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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.