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Finding the Fourth Proportional to 104,528.80, 156,793.21 and 45,363.16

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Solution

The fourth proportional to 104,528.80, 156,793.21 and 45,363.16 is: 68,044.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,528.80 : 156,793.21 = 45,363.16 : x
  2. Step 2: Convert to fraction form
    104,528.80/156,793.21 = 45,363.16/x
  3. Step 3: Cross multiply
    104,528.80x = 156,793.21 × 45,363.16
  4. Step 4: Simplify right side
    104,528.80x = 7,112,635,931.92
  5. Step 5: Solve for x
    x = 7,112,635,931.92/104,528.80
  6. Step 6: Final answer
    x = 68,044.75

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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.