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Finding the Fourth Proportional to 199,683.76, 299,519.88 and 51,939.76

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Solution

The fourth proportional to 199,683.76, 299,519.88 and 51,939.76 is: 77,908.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,683.76 : 299,519.88 = 51,939.76 : x
  2. Step 2: Convert to fraction form
    199,683.76/299,519.88 = 51,939.76/x
  3. Step 3: Cross multiply
    199,683.76x = 299,519.88 × 51,939.76
  4. Step 4: Simplify right side
    199,683.76x = 15,556,990,682.43
  5. Step 5: Solve for x
    x = 15,556,990,682.43/199,683.76
  6. Step 6: Final answer
    x = 77,908.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.