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Finding the Fourth Proportional to 119,392.64, 164,706.60 and 71,562.98

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Solution

The fourth proportional to 119,392.64, 164,706.60 and 71,562.98 is: 98,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,392.64 : 164,706.60 = 71,562.98 : x
  2. Step 2: Convert to fraction form
    119,392.64/164,706.60 = 71,562.98/x
  3. Step 3: Cross multiply
    119,392.64x = 164,706.60 × 71,562.98
  4. Step 4: Simplify right side
    119,392.64x = 11,786,895,121.67
  5. Step 5: Solve for x
    x = 11,786,895,121.67/119,392.64
  6. Step 6: Final answer
    x = 98,723.80

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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.