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Finding the Fourth Proportional to 191,101.95, 263,723.64 and 105,064.66

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Solution

The fourth proportional to 191,101.95, 263,723.64 and 105,064.66 is: 144,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,101.95 : 263,723.64 = 105,064.66 : x
  2. Step 2: Convert to fraction form
    191,101.95/263,723.64 = 105,064.66/x
  3. Step 3: Cross multiply
    191,101.95x = 263,723.64 × 105,064.66
  4. Step 4: Simplify right side
    191,101.95x = 27,708,033,911.25
  5. Step 5: Solve for x
    x = 27,708,033,911.25/191,101.95
  6. Step 6: Final answer
    x = 144,990.85

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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.