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Finding the Fourth Proportional to 191,411.71, 287,117.56 and 51,166.69

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Solution

The fourth proportional to 191,411.71, 287,117.56 and 51,166.69 is: 76,750.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,411.71 : 287,117.56 = 51,166.69 : x
  2. Step 2: Convert to fraction form
    191,411.71/287,117.56 = 51,166.69/x
  3. Step 3: Cross multiply
    191,411.71x = 287,117.56 × 51,166.69
  4. Step 4: Simplify right side
    191,411.71x = 14,690,854,532.24
  5. Step 5: Solve for x
    x = 14,690,854,532.24/191,411.71
  6. Step 6: Final answer
    x = 76,750.03

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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.