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Finding the Fourth Proportional to 191,718.87, 264,550.34 and 111,129.74

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Solution

The fourth proportional to 191,718.87, 264,550.34 and 111,129.74 is: 153,346.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,718.87 : 264,550.34 = 111,129.74 : x
  2. Step 2: Convert to fraction form
    191,718.87/264,550.34 = 111,129.74/x
  3. Step 3: Cross multiply
    191,718.87x = 264,550.34 × 111,129.74
  4. Step 4: Simplify right side
    191,718.87x = 29,399,408,622.71
  5. Step 5: Solve for x
    x = 29,399,408,622.71/191,718.87
  6. Step 6: Final answer
    x = 153,346.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.