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Finding the Fourth Proportional to 191,837.61, 264,751.70 and 105,813.45

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Solution

The fourth proportional to 191,837.61, 264,751.70 and 105,813.45 is: 146,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,837.61 : 264,751.70 = 105,813.45 : x
  2. Step 2: Convert to fraction form
    191,837.61/264,751.70 = 105,813.45/x
  3. Step 3: Cross multiply
    191,837.61x = 264,751.70 × 105,813.45
  4. Step 4: Simplify right side
    191,837.61x = 28,014,290,241.30
  5. Step 5: Solve for x
    x = 28,014,290,241.30/191,837.61
  6. Step 6: Final answer
    x = 146,031.27

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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.