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Finding the Fourth Proportional to 191,393.91, 287,155.26 and 84,763.08

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Solution

The fourth proportional to 191,393.91, 287,155.26 and 84,763.08 is: 127,173.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,393.91 : 287,155.26 = 84,763.08 : x
  2. Step 2: Convert to fraction form
    191,393.91/287,155.26 = 84,763.08/x
  3. Step 3: Cross multiply
    191,393.91x = 287,155.26 × 84,763.08
  4. Step 4: Simplify right side
    191,393.91x = 24,340,164,275.80
  5. Step 5: Solve for x
    x = 24,340,164,275.80/191,393.91
  6. Step 6: Final answer
    x = 127,173.14

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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.