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Finding the Fourth Proportional to 191,811, 287,716.50 and 60,483

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Solution

The fourth proportional to 191,811, 287,716.50 and 60,483 is: 90,724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,811 : 287,716.50 = 60,483 : x
  2. Step 2: Convert to fraction form
    191,811/287,716.50 = 60,483/x
  3. Step 3: Cross multiply
    191,811x = 287,716.50 × 60,483
  4. Step 4: Simplify right side
    191,811x = 17,401,957,069.50
  5. Step 5: Solve for x
    x = 17,401,957,069.50/191,811
  6. Step 6: Final answer
    x = 90,724.50

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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.