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Finding the Fourth Proportional to 191,815.20, 287,744.40 and 58,694.40

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Solution

The fourth proportional to 191,815.20, 287,744.40 and 58,694.40 is: 88,048.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,815.20 : 287,744.40 = 58,694.40 : x
  2. Step 2: Convert to fraction form
    191,815.20/287,744.40 = 58,694.40/x
  3. Step 3: Cross multiply
    191,815.20x = 287,744.40 × 58,694.40
  4. Step 4: Simplify right side
    191,815.20x = 16,888,984,911.36
  5. Step 5: Solve for x
    x = 16,888,984,911.36/191,815.20
  6. Step 6: Final answer
    x = 88,048.21

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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.