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Finding the Fourth Proportional to 199,586.72, 299,129.88 and 99,774.92

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Solution

The fourth proportional to 199,586.72, 299,129.88 and 99,774.92 is: 149,537.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,586.72 : 299,129.88 = 99,774.92 : x
  2. Step 2: Convert to fraction form
    199,586.72/299,129.88 = 99,774.92/x
  3. Step 3: Cross multiply
    199,586.72x = 299,129.88 × 99,774.92
  4. Step 4: Simplify right side
    199,586.72x = 29,845,659,846.61
  5. Step 5: Solve for x
    x = 29,845,659,846.61/199,586.72
  6. Step 6: Final answer
    x = 149,537.30

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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.