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Finding the Fourth Proportional to 104,604.16, 156,889.74 and 86,948.32

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Solution

The fourth proportional to 104,604.16, 156,889.74 and 86,948.32 is: 130,408.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,604.16 : 156,889.74 = 86,948.32 : x
  2. Step 2: Convert to fraction form
    104,604.16/156,889.74 = 86,948.32/x
  3. Step 3: Cross multiply
    104,604.16x = 156,889.74 × 86,948.32
  4. Step 4: Simplify right side
    104,604.16x = 13,641,299,318.24
  5. Step 5: Solve for x
    x = 13,641,299,318.24/104,604.16
  6. Step 6: Final answer
    x = 130,408.76

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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.