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Finding the Fourth Proportional to 191,100.60, 263,720.88 and 105,068.88

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Solution

The fourth proportional to 191,100.60, 263,720.88 and 105,068.88 is: 144,996.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,100.60 : 263,720.88 = 105,068.88 : x
  2. Step 2: Convert to fraction form
    191,100.60/263,720.88 = 105,068.88/x
  3. Step 3: Cross multiply
    191,100.60x = 263,720.88 × 105,068.88
  4. Step 4: Simplify right side
    191,100.60x = 27,708,857,494.21
  5. Step 5: Solve for x
    x = 27,708,857,494.21/191,100.60
  6. Step 6: Final answer
    x = 144,996.18

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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.