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Finding the Fourth Proportional to 56,684.32, 84,984.84 and 28,590.52

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Solution

The fourth proportional to 56,684.32, 84,984.84 and 28,590.52 is: 42,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,684.32 : 84,984.84 = 28,590.52 : x
  2. Step 2: Convert to fraction form
    56,684.32/84,984.84 = 28,590.52/x
  3. Step 3: Cross multiply
    56,684.32x = 84,984.84 × 28,590.52
  4. Step 4: Simplify right side
    56,684.32x = 2,429,760,767.72
  5. Step 5: Solve for x
    x = 2,429,760,767.72/56,684.32
  6. Step 6: Final answer
    x = 42,864.78

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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.