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Finding the Fourth Proportional to 191,891.36, 264,803.60 and 105,853.78

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Solution

The fourth proportional to 191,891.36, 264,803.60 and 105,853.78 is: 146,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,891.36 : 264,803.60 = 105,853.78 : x
  2. Step 2: Convert to fraction form
    191,891.36/264,803.60 = 105,853.78/x
  3. Step 3: Cross multiply
    191,891.36x = 264,803.60 × 105,853.78
  4. Step 4: Simplify right side
    191,891.36x = 28,030,462,017.61
  5. Step 5: Solve for x
    x = 28,030,462,017.61/191,891.36
  6. Step 6: Final answer
    x = 146,074.64

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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.