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Finding the Fourth Proportional to 104,278.89, 156,457.42 and 48,145.89

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Solution

The fourth proportional to 104,278.89, 156,457.42 and 48,145.89 is: 72,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,278.89 : 156,457.42 = 48,145.89 : x
  2. Step 2: Convert to fraction form
    104,278.89/156,457.42 = 48,145.89/x
  3. Step 3: Cross multiply
    104,278.89x = 156,457.42 × 48,145.89
  4. Step 4: Simplify right side
    104,278.89x = 7,532,781,733.00
  5. Step 5: Solve for x
    x = 7,532,781,733.00/104,278.89
  6. Step 6: Final answer
    x = 72,236.88

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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.