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Finding the Fourth Proportional to 98,099.08, 135,375.48 and 57,814.56

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Solution

The fourth proportional to 98,099.08, 135,375.48 and 57,814.56 is: 79,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,099.08 : 135,375.48 = 57,814.56 : x
  2. Step 2: Convert to fraction form
    98,099.08/135,375.48 = 57,814.56/x
  3. Step 3: Cross multiply
    98,099.08x = 135,375.48 × 57,814.56
  4. Step 4: Simplify right side
    98,099.08x = 7,826,673,810.99
  5. Step 5: Solve for x
    x = 7,826,673,810.99/98,099.08
  6. Step 6: Final answer
    x = 79,783.36

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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.