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Finding the Fourth Proportional to 191,681.37, 287,556.21 and 65,314.62

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Solution

The fourth proportional to 191,681.37, 287,556.21 and 65,314.62 is: 97,983.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,681.37 : 287,556.21 = 65,314.62 : x
  2. Step 2: Convert to fraction form
    191,681.37/287,556.21 = 65,314.62/x
  3. Step 3: Cross multiply
    191,681.37x = 287,556.21 × 65,314.62
  4. Step 4: Simplify right side
    191,681.37x = 18,781,624,584.79
  5. Step 5: Solve for x
    x = 18,781,624,584.79/191,681.37
  6. Step 6: Final answer
    x = 97,983.57

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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.