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Finding the Fourth Proportional to 188,452.12, 260,124.53 and 120,651.70

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Solution

The fourth proportional to 188,452.12, 260,124.53 and 120,651.70 is: 166,538.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,452.12 : 260,124.53 = 120,651.70 : x
  2. Step 2: Convert to fraction form
    188,452.12/260,124.53 = 120,651.70/x
  3. Step 3: Cross multiply
    188,452.12x = 260,124.53 × 120,651.70
  4. Step 4: Simplify right side
    188,452.12x = 31,384,465,502.63
  5. Step 5: Solve for x
    x = 31,384,465,502.63/188,452.12
  6. Step 6: Final answer
    x = 166,538.14

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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.