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Finding the Fourth Proportional to 56,437.21, 84,656.28 and 45,894.97

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Solution

The fourth proportional to 56,437.21, 84,656.28 and 45,894.97 is: 68,842.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,437.21 : 84,656.28 = 45,894.97 : x
  2. Step 2: Convert to fraction form
    56,437.21/84,656.28 = 45,894.97/x
  3. Step 3: Cross multiply
    56,437.21x = 84,656.28 × 45,894.97
  4. Step 4: Simplify right side
    56,437.21x = 3,885,297,430.91
  5. Step 5: Solve for x
    x = 3,885,297,430.91/56,437.21
  6. Step 6: Final answer
    x = 68,842.83

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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.