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Finding the Fourth Proportional to 88,226.64, 121,718.16 and 50,480.64

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Solution

The fourth proportional to 88,226.64, 121,718.16 and 50,480.64 is: 69,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,226.64 : 121,718.16 = 50,480.64 : x
  2. Step 2: Convert to fraction form
    88,226.64/121,718.16 = 50,480.64/x
  3. Step 3: Cross multiply
    88,226.64x = 121,718.16 × 50,480.64
  4. Step 4: Simplify right side
    88,226.64x = 6,144,410,616.42
  5. Step 5: Solve for x
    x = 6,144,410,616.42/88,226.64
  6. Step 6: Final answer
    x = 69,643.48

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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.