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Finding the Fourth Proportional to 104,785.90, 157,090.69 and 45,576.98

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Solution

The fourth proportional to 104,785.90, 157,090.69 and 45,576.98 is: 68,327.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,785.90 : 157,090.69 = 45,576.98 : x
  2. Step 2: Convert to fraction form
    104,785.90/157,090.69 = 45,576.98/x
  3. Step 3: Cross multiply
    104,785.90x = 157,090.69 × 45,576.98
  4. Step 4: Simplify right side
    104,785.90x = 7,159,719,096.92
  5. Step 5: Solve for x
    x = 7,159,719,096.92/104,785.90
  6. Step 6: Final answer
    x = 68,327.12

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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.