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Finding the Fourth Proportional to 253,753.58, 350,176.05 and 139,031.30

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Solution

The fourth proportional to 253,753.58, 350,176.05 and 139,031.30 is: 191,861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,753.58 : 350,176.05 = 139,031.30 : x
  2. Step 2: Convert to fraction form
    253,753.58/350,176.05 = 139,031.30/x
  3. Step 3: Cross multiply
    253,753.58x = 350,176.05 × 139,031.30
  4. Step 4: Simplify right side
    253,753.58x = 48,685,431,460.37
  5. Step 5: Solve for x
    x = 48,685,431,460.37/253,753.58
  6. Step 6: Final answer
    x = 191,861.06

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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.