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Finding the Fourth Proportional to 116,010.36, 160,088.94 and 65,709.72

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Solution

The fourth proportional to 116,010.36, 160,088.94 and 65,709.72 is: 90,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,010.36 : 160,088.94 = 65,709.72 : x
  2. Step 2: Convert to fraction form
    116,010.36/160,088.94 = 65,709.72/x
  3. Step 3: Cross multiply
    116,010.36x = 160,088.94 × 65,709.72
  4. Step 4: Simplify right side
    116,010.36x = 10,519,399,422.50
  5. Step 5: Solve for x
    x = 10,519,399,422.50/116,010.36
  6. Step 6: Final answer
    x = 90,676.38

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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.