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Finding the Fourth Proportional to 317,873.94, 476,835.32 and 90,165.66

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Solution

The fourth proportional to 317,873.94, 476,835.32 and 90,165.66 is: 135,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,873.94 : 476,835.32 = 90,165.66 : x
  2. Step 2: Convert to fraction form
    317,873.94/476,835.32 = 90,165.66/x
  3. Step 3: Cross multiply
    317,873.94x = 476,835.32 × 90,165.66
  4. Step 4: Simplify right side
    317,873.94x = 42,994,169,776.39
  5. Step 5: Solve for x
    x = 42,994,169,776.39/317,873.94
  6. Step 6: Final answer
    x = 135,255.41

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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.