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Finding the Fourth Proportional to 247,150.78, 341,082.77 and 139,730.81

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Solution

The fourth proportional to 247,150.78, 341,082.77 and 139,730.81 is: 192,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,150.78 : 341,082.77 = 139,730.81 : x
  2. Step 2: Convert to fraction form
    247,150.78/341,082.77 = 139,730.81/x
  3. Step 3: Cross multiply
    247,150.78x = 341,082.77 × 139,730.81
  4. Step 4: Simplify right side
    247,150.78x = 47,659,769,325.08
  5. Step 5: Solve for x
    x = 47,659,769,325.08/247,150.78
  6. Step 6: Final answer
    x = 192,836.82

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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.