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Finding the Fourth Proportional to 191,893.81, 287,838.69 and 65,532.61

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Solution

The fourth proportional to 191,893.81, 287,838.69 and 65,532.61 is: 98,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,893.81 : 287,838.69 = 65,532.61 : x
  2. Step 2: Convert to fraction form
    191,893.81/287,838.69 = 65,532.61/x
  3. Step 3: Cross multiply
    191,893.81x = 287,838.69 × 65,532.61
  4. Step 4: Simplify right side
    191,893.81x = 18,862,820,614.68
  5. Step 5: Solve for x
    x = 18,862,820,614.68/191,893.81
  6. Step 6: Final answer
    x = 98,298.22

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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.