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Finding the Fourth Proportional to 104,640.95, 156,957.91 and 45,476.63

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Solution

The fourth proportional to 104,640.95, 156,957.91 and 45,476.63 is: 68,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.95 : 156,957.91 = 45,476.63 : x
  2. Step 2: Convert to fraction form
    104,640.95/156,957.91 = 45,476.63/x
  3. Step 3: Cross multiply
    104,640.95x = 156,957.91 × 45,476.63
  4. Step 4: Simplify right side
    104,640.95x = 7,137,916,798.64
  5. Step 5: Solve for x
    x = 7,137,916,798.64/104,640.95
  6. Step 6: Final answer
    x = 68,213.42

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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.