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Finding the Fourth Proportional to 191,756.97, 264,626.45 and 105,719.10

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Solution

The fourth proportional to 191,756.97, 264,626.45 and 105,719.10 is: 145,893.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,756.97 : 264,626.45 = 105,719.10 : x
  2. Step 2: Convert to fraction form
    191,756.97/264,626.45 = 105,719.10/x
  3. Step 3: Cross multiply
    191,756.97x = 264,626.45 × 105,719.10
  4. Step 4: Simplify right side
    191,756.97x = 27,976,068,807.06
  5. Step 5: Solve for x
    x = 27,976,068,807.06/191,756.97
  6. Step 6: Final answer
    x = 145,893.36

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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.