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Finding the Fourth Proportional to 116,008.36, 173,985.34 and 65,429.28

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Solution

The fourth proportional to 116,008.36, 173,985.34 and 65,429.28 is: 98,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,008.36 : 173,985.34 = 65,429.28 : x
  2. Step 2: Convert to fraction form
    116,008.36/173,985.34 = 65,429.28/x
  3. Step 3: Cross multiply
    116,008.36x = 173,985.34 × 65,429.28
  4. Step 4: Simplify right side
    116,008.36x = 11,383,735,526.76
  5. Step 5: Solve for x
    x = 11,383,735,526.76/116,008.36
  6. Step 6: Final answer
    x = 98,128.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.