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Finding the Fourth Proportional to 285,114.64, 393,444.84 and 171,911.44

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Solution

The fourth proportional to 285,114.64, 393,444.84 and 171,911.44 is: 237,229.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,114.64 : 393,444.84 = 171,911.44 : x
  2. Step 2: Convert to fraction form
    285,114.64/393,444.84 = 171,911.44/x
  3. Step 3: Cross multiply
    285,114.64x = 393,444.84 × 171,911.44
  4. Step 4: Simplify right side
    285,114.64x = 67,637,669,004.97
  5. Step 5: Solve for x
    x = 67,637,669,004.97/285,114.64
  6. Step 6: Final answer
    x = 237,229.73

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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.