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Finding the Fourth Proportional to 285,412.32, 394,135.92 and 183,614.88

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Solution

The fourth proportional to 285,412.32, 394,135.92 and 183,614.88 is: 253,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,412.32 : 394,135.92 = 183,614.88 : x
  2. Step 2: Convert to fraction form
    285,412.32/394,135.92 = 183,614.88/x
  3. Step 3: Cross multiply
    285,412.32x = 394,135.92 × 183,614.88
  4. Step 4: Simplify right side
    285,412.32x = 72,369,219,654.49
  5. Step 5: Solve for x
    x = 72,369,219,654.49/285,412.32
  6. Step 6: Final answer
    x = 253,560.25

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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.