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Finding the Fourth Proportional to 313,155.60, 469,638.36 and 88,498.32

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Solution

The fourth proportional to 313,155.60, 469,638.36 and 88,498.32 is: 132,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,155.60 : 469,638.36 = 88,498.32 : x
  2. Step 2: Convert to fraction form
    313,155.60/469,638.36 = 88,498.32/x
  3. Step 3: Cross multiply
    313,155.60x = 469,638.36 × 88,498.32
  4. Step 4: Simplify right side
    313,155.60x = 41,562,205,867.56
  5. Step 5: Solve for x
    x = 41,562,205,867.56/313,155.60
  6. Step 6: Final answer
    x = 132,720.62

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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.