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Finding the Fourth Proportional to 191,610.09, 287,450.01 and 65,243.88

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Solution

The fourth proportional to 191,610.09, 287,450.01 and 65,243.88 is: 97,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,610.09 : 287,450.01 = 65,243.88 : x
  2. Step 2: Convert to fraction form
    191,610.09/287,450.01 = 65,243.88/x
  3. Step 3: Cross multiply
    191,610.09x = 287,450.01 × 65,243.88
  4. Step 4: Simplify right side
    191,610.09x = 18,754,353,958.44
  5. Step 5: Solve for x
    x = 18,754,353,958.44/191,610.09
  6. Step 6: Final answer
    x = 97,877.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.