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Finding the Fourth Proportional to 99,186, 148,779.81 and 36,856.50

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Solution

The fourth proportional to 99,186, 148,779.81 and 36,856.50 is: 55,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,186 : 148,779.81 = 36,856.50 : x
  2. Step 2: Convert to fraction form
    99,186/148,779.81 = 36,856.50/x
  3. Step 3: Cross multiply
    99,186x = 148,779.81 × 36,856.50
  4. Step 4: Simplify right side
    99,186x = 5,483,503,067.27
  5. Step 5: Solve for x
    x = 5,483,503,067.27/99,186
  6. Step 6: Final answer
    x = 55,285.05

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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.