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Finding the Fourth Proportional to 54,934.40, 82,404.30 and 28,690.40

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Solution

The fourth proportional to 54,934.40, 82,404.30 and 28,690.40 is: 43,037.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,934.40 : 82,404.30 = 28,690.40 : x
  2. Step 2: Convert to fraction form
    54,934.40/82,404.30 = 28,690.40/x
  3. Step 3: Cross multiply
    54,934.40x = 82,404.30 × 28,690.40
  4. Step 4: Simplify right side
    54,934.40x = 2,364,212,328.72
  5. Step 5: Solve for x
    x = 2,364,212,328.72/54,934.40
  6. Step 6: Final answer
    x = 43,037.01

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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.