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Finding the Fourth Proportional to 189,377.64, 261,717.30 and 155,333.16

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Solution

The fourth proportional to 189,377.64, 261,717.30 and 155,333.16 is: 214,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,377.64 : 261,717.30 = 155,333.16 : x
  2. Step 2: Convert to fraction form
    189,377.64/261,717.30 = 155,333.16/x
  3. Step 3: Cross multiply
    189,377.64x = 261,717.30 × 155,333.16
  4. Step 4: Simplify right side
    189,377.64x = 40,653,375,235.67
  5. Step 5: Solve for x
    x = 40,653,375,235.67/189,377.64
  6. Step 6: Final answer
    x = 214,668.30

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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.