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Finding the Fourth Proportional to 104,245.65, 143,855.14 and 56,497.98

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Solution

The fourth proportional to 104,245.65, 143,855.14 and 56,497.98 is: 77,965.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,245.65 : 143,855.14 = 56,497.98 : x
  2. Step 2: Convert to fraction form
    104,245.65/143,855.14 = 56,497.98/x
  3. Step 3: Cross multiply
    104,245.65x = 143,855.14 × 56,497.98
  4. Step 4: Simplify right side
    104,245.65x = 8,127,524,822.62
  5. Step 5: Solve for x
    x = 8,127,524,822.62/104,245.65
  6. Step 6: Final answer
    x = 77,965.12

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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.