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Finding the Fourth Proportional to 191,670.58, 287,639.26 and 79,351.38

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Solution

The fourth proportional to 191,670.58, 287,639.26 and 79,351.38 is: 119,082.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,670.58 : 287,639.26 = 79,351.38 : x
  2. Step 2: Convert to fraction form
    191,670.58/287,639.26 = 79,351.38/x
  3. Step 3: Cross multiply
    191,670.58x = 287,639.26 × 79,351.38
  4. Step 4: Simplify right side
    191,670.58x = 22,824,572,223.18
  5. Step 5: Solve for x
    x = 22,824,572,223.18/191,670.58
  6. Step 6: Final answer
    x = 119,082.29

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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.