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Finding the Fourth Proportional to 191,510.68, 287,219.87 and 84,835.65

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Solution

The fourth proportional to 191,510.68, 287,219.87 and 84,835.65 is: 127,233.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,510.68 : 287,219.87 = 84,835.65 : x
  2. Step 2: Convert to fraction form
    191,510.68/287,219.87 = 84,835.65/x
  3. Step 3: Cross multiply
    191,510.68x = 287,219.87 × 84,835.65
  4. Step 4: Simplify right side
    191,510.68x = 24,366,485,812.60
  5. Step 5: Solve for x
    x = 24,366,485,812.60/191,510.68
  6. Step 6: Final answer
    x = 127,233.04

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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.