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Finding the Fourth Proportional to 92,889.15, 128,186.31 and 50,447.68

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Solution

The fourth proportional to 92,889.15, 128,186.31 and 50,447.68 is: 69,617.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,889.15 : 128,186.31 = 50,447.68 : x
  2. Step 2: Convert to fraction form
    92,889.15/128,186.31 = 50,447.68/x
  3. Step 3: Cross multiply
    92,889.15x = 128,186.31 × 50,447.68
  4. Step 4: Simplify right side
    92,889.15x = 6,466,702,119.51
  5. Step 5: Solve for x
    x = 6,466,702,119.51/92,889.15
  6. Step 6: Final answer
    x = 69,617.41

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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.