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Finding the Fourth Proportional to 251,953.52, 347,695.79 and 138,776.27

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Solution

The fourth proportional to 251,953.52, 347,695.79 and 138,776.27 is: 191,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,953.52 : 347,695.79 = 138,776.27 : x
  2. Step 2: Convert to fraction form
    251,953.52/347,695.79 = 138,776.27/x
  3. Step 3: Cross multiply
    251,953.52x = 347,695.79 × 138,776.27
  4. Step 4: Simplify right side
    251,953.52x = 48,251,922,398.54
  5. Step 5: Solve for x
    x = 48,251,922,398.54/251,953.52
  6. Step 6: Final answer
    x = 191,511.21

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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.