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Finding the Fourth Proportional to 191,120.88, 263,751.88 and 105,083.46

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Solution

The fourth proportional to 191,120.88, 263,751.88 and 105,083.46 is: 145,017.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,120.88 : 263,751.88 = 105,083.46 : x
  2. Step 2: Convert to fraction form
    191,120.88/263,751.88 = 105,083.46/x
  3. Step 3: Cross multiply
    191,120.88x = 263,751.88 × 105,083.46
  4. Step 4: Simplify right side
    191,120.88x = 27,715,960,131.90
  5. Step 5: Solve for x
    x = 27,715,960,131.90/191,120.88
  6. Step 6: Final answer
    x = 145,017.96

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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.