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Finding the Fourth Proportional to 74,688.69, 111,977.28 and 32,560.77

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Solution

The fourth proportional to 74,688.69, 111,977.28 and 32,560.77 is: 48,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.69 : 111,977.28 = 32,560.77 : x
  2. Step 2: Convert to fraction form
    74,688.69/111,977.28 = 32,560.77/x
  3. Step 3: Cross multiply
    74,688.69x = 111,977.28 × 32,560.77
  4. Step 4: Simplify right side
    74,688.69x = 3,646,066,459.31
  5. Step 5: Solve for x
    x = 3,646,066,459.31/74,688.69
  6. Step 6: Final answer
    x = 48,816.85

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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.