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Finding the Fourth Proportional to 92,986.88, 128,321.16 and 50,544.32

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Solution

The fourth proportional to 92,986.88, 128,321.16 and 50,544.32 is: 69,750.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,986.88 : 128,321.16 = 50,544.32 : x
  2. Step 2: Convert to fraction form
    92,986.88/128,321.16 = 50,544.32/x
  3. Step 3: Cross multiply
    92,986.88x = 128,321.16 × 50,544.32
  4. Step 4: Simplify right side
    92,986.88x = 6,485,905,773.81
  5. Step 5: Solve for x
    x = 6,485,905,773.81/92,986.88
  6. Step 6: Final answer
    x = 69,750.76

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1.5x scale

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.