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Finding the Fourth Proportional to 285,394.05, 393,846.69 and 172,194.93

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Solution

The fourth proportional to 285,394.05, 393,846.69 and 172,194.93 is: 237,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,394.05 : 393,846.69 = 172,194.93 : x
  2. Step 2: Convert to fraction form
    285,394.05/393,846.69 = 172,194.93/x
  3. Step 3: Cross multiply
    285,394.05x = 393,846.69 × 172,194.93
  4. Step 4: Simplify right side
    285,394.05x = 67,818,403,215.28
  5. Step 5: Solve for x
    x = 67,818,403,215.28/285,394.05
  6. Step 6: Final answer
    x = 237,630.75

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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.