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Finding the Fourth Proportional to 191,439.72, 264,187.44 and 105,400.44

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Solution

The fourth proportional to 191,439.72, 264,187.44 and 105,400.44 is: 145,452.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,439.72 : 264,187.44 = 105,400.44 : x
  2. Step 2: Convert to fraction form
    191,439.72/264,187.44 = 105,400.44/x
  3. Step 3: Cross multiply
    191,439.72x = 264,187.44 × 105,400.44
  4. Step 4: Simplify right side
    191,439.72x = 27,845,472,418.47
  5. Step 5: Solve for x
    x = 27,845,472,418.47/191,439.72
  6. Step 6: Final answer
    x = 145,452.95

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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.