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Finding the Fourth Proportional to 104,610.10, 156,915.15 and 91,488.10

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Solution

The fourth proportional to 104,610.10, 156,915.15 and 91,488.10 is: 137,232.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,610.10 : 156,915.15 = 91,488.10 : x
  2. Step 2: Convert to fraction form
    104,610.10/156,915.15 = 91,488.10/x
  3. Step 3: Cross multiply
    104,610.10x = 156,915.15 × 91,488.10
  4. Step 4: Simplify right side
    104,610.10x = 14,355,868,934.72
  5. Step 5: Solve for x
    x = 14,355,868,934.72/104,610.10
  6. Step 6: Final answer
    x = 137,232.15

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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.