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Finding the Fourth Proportional to 173,639.40, 260,459.10 and 136,314.60

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Solution

The fourth proportional to 173,639.40, 260,459.10 and 136,314.60 is: 204,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,639.40 : 260,459.10 = 136,314.60 : x
  2. Step 2: Convert to fraction form
    173,639.40/260,459.10 = 136,314.60/x
  3. Step 3: Cross multiply
    173,639.40x = 260,459.10 × 136,314.60
  4. Step 4: Simplify right side
    173,639.40x = 35,504,378,032.86
  5. Step 5: Solve for x
    x = 35,504,378,032.86/173,639.40
  6. Step 6: Final answer
    x = 204,471.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.