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Finding the Fourth Proportional to 104,466.80, 156,700.20 and 99,916.40

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Solution

The fourth proportional to 104,466.80, 156,700.20 and 99,916.40 is: 149,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,466.80 : 156,700.20 = 99,916.40 : x
  2. Step 2: Convert to fraction form
    104,466.80/156,700.20 = 99,916.40/x
  3. Step 3: Cross multiply
    104,466.80x = 156,700.20 × 99,916.40
  4. Step 4: Simplify right side
    104,466.80x = 15,656,919,863.28
  5. Step 5: Solve for x
    x = 15,656,919,863.28/104,466.80
  6. Step 6: Final answer
    x = 149,874.60

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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.