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Finding the Fourth Proportional to 66,762.02, 92,138.92 and 42,563.86

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Solution

The fourth proportional to 66,762.02, 92,138.92 and 42,563.86 is: 58,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,762.02 : 92,138.92 = 42,563.86 : x
  2. Step 2: Convert to fraction form
    66,762.02/92,138.92 = 42,563.86/x
  3. Step 3: Cross multiply
    66,762.02x = 92,138.92 × 42,563.86
  4. Step 4: Simplify right side
    66,762.02x = 3,921,787,754.67
  5. Step 5: Solve for x
    x = 3,921,787,754.67/66,762.02
  6. Step 6: Final answer
    x = 58,742.79

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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.