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Finding the Fourth Proportional to 285,212.70, 393,594.09 and 183,238.77

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Solution

The fourth proportional to 285,212.70, 393,594.09 and 183,238.77 is: 252,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,212.70 : 393,594.09 = 183,238.77 : x
  2. Step 2: Convert to fraction form
    285,212.70/393,594.09 = 183,238.77/x
  3. Step 3: Cross multiply
    285,212.70x = 393,594.09 × 183,238.77
  4. Step 4: Simplify right side
    285,212.70x = 72,121,696,930.87
  5. Step 5: Solve for x
    x = 72,121,696,930.87/285,212.70
  6. Step 6: Final answer
    x = 252,869.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.