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Finding the Fourth Proportional to 56,484.54, 77,949.54 and 40,355.82

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Solution

The fourth proportional to 56,484.54, 77,949.54 and 40,355.82 is: 55,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,484.54 : 77,949.54 = 40,355.82 : x
  2. Step 2: Convert to fraction form
    56,484.54/77,949.54 = 40,355.82/x
  3. Step 3: Cross multiply
    56,484.54x = 77,949.54 × 40,355.82
  4. Step 4: Simplify right side
    56,484.54x = 3,145,717,605.32
  5. Step 5: Solve for x
    x = 3,145,717,605.32/56,484.54
  6. Step 6: Final answer
    x = 55,691.66

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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.