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Finding the Fourth Proportional to 119,554.70, 164,979.72 and 65,841.98

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Solution

The fourth proportional to 119,554.70, 164,979.72 and 65,841.98 is: 90,858.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,554.70 : 164,979.72 = 65,841.98 : x
  2. Step 2: Convert to fraction form
    119,554.70/164,979.72 = 65,841.98/x
  3. Step 3: Cross multiply
    119,554.70x = 164,979.72 × 65,841.98
  4. Step 4: Simplify right side
    119,554.70x = 10,862,590,599.75
  5. Step 5: Solve for x
    x = 10,862,590,599.75/119,554.70
  6. Step 6: Final answer
    x = 90,858.75

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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.