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Finding the Fourth Proportional to 104,610.90, 156,916.35 and 64,661.70

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Solution

The fourth proportional to 104,610.90, 156,916.35 and 64,661.70 is: 96,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,610.90 : 156,916.35 = 64,661.70 : x
  2. Step 2: Convert to fraction form
    104,610.90/156,916.35 = 64,661.70/x
  3. Step 3: Cross multiply
    104,610.90x = 156,916.35 × 64,661.70
  4. Step 4: Simplify right side
    104,610.90x = 10,146,477,948.80
  5. Step 5: Solve for x
    x = 10,146,477,948.80/104,610.90
  6. Step 6: Final answer
    x = 96,992.55

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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.