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Finding the Fourth Proportional to 331,651.63, 457,680.77 and 188,419.53

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Solution

The fourth proportional to 331,651.63, 457,680.77 and 188,419.53 is: 260,019.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,651.63 : 457,680.77 = 188,419.53 : x
  2. Step 2: Convert to fraction form
    331,651.63/457,680.77 = 188,419.53/x
  3. Step 3: Cross multiply
    331,651.63x = 457,680.77 × 188,419.53
  4. Step 4: Simplify right side
    331,651.63x = 86,235,997,054.22
  5. Step 5: Solve for x
    x = 86,235,997,054.22/331,651.63
  6. Step 6: Final answer
    x = 260,019.82

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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.