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Finding the Fourth Proportional to 56,956.42, 85,486.67 and 28,895.79

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Solution

The fourth proportional to 56,956.42, 85,486.67 and 28,895.79 is: 43,370.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,956.42 : 85,486.67 = 28,895.79 : x
  2. Step 2: Convert to fraction form
    56,956.42/85,486.67 = 28,895.79/x
  3. Step 3: Cross multiply
    56,956.42x = 85,486.67 × 28,895.79
  4. Step 4: Simplify right side
    56,956.42x = 2,470,204,864.12
  5. Step 5: Solve for x
    x = 2,470,204,864.12/56,956.42
  6. Step 6: Final answer
    x = 43,370.09

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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.