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Finding the Fourth Proportional to 251,953.38, 347,695.61 and 138,776.13

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Solution

The fourth proportional to 251,953.38, 347,695.61 and 138,776.13 is: 191,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,953.38 : 347,695.61 = 138,776.13 : x
  2. Step 2: Convert to fraction form
    251,953.38/347,695.61 = 138,776.13/x
  3. Step 3: Cross multiply
    251,953.38x = 347,695.61 × 138,776.13
  4. Step 4: Simplify right side
    251,953.38x = 48,251,851,173.79
  5. Step 5: Solve for x
    x = 48,251,851,173.79/251,953.38
  6. Step 6: Final answer
    x = 191,511.03

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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.