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Finding the Fourth Proportional to 104,311.90, 143,950.47 and 56,565.24

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Solution

The fourth proportional to 104,311.90, 143,950.47 and 56,565.24 is: 78,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,311.90 : 143,950.47 = 56,565.24 : x
  2. Step 2: Convert to fraction form
    104,311.90/143,950.47 = 56,565.24/x
  3. Step 3: Cross multiply
    104,311.90x = 143,950.47 × 56,565.24
  4. Step 4: Simplify right side
    104,311.90x = 8,142,592,131.73
  5. Step 5: Solve for x
    x = 8,142,592,131.73/104,311.90
  6. Step 6: Final answer
    x = 78,060.05

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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.