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Finding the Fourth Proportional to 191,405.57, 287,127.99 and 73,176.35

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Solution

The fourth proportional to 191,405.57, 287,127.99 and 73,176.35 is: 109,772.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,405.57 : 287,127.99 = 73,176.35 : x
  2. Step 2: Convert to fraction form
    191,405.57/287,127.99 = 73,176.35/x
  3. Step 3: Cross multiply
    191,405.57x = 287,127.99 × 73,176.35
  4. Step 4: Simplify right side
    191,405.57x = 21,010,976,855.40
  5. Step 5: Solve for x
    x = 21,010,976,855.40/191,405.57
  6. Step 6: Final answer
    x = 109,772.03

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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.