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Finding the Fourth Proportional to 317,832.60, 476,748.84 and 81,166.80

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Solution

The fourth proportional to 317,832.60, 476,748.84 and 81,166.80 is: 121,750.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,832.60 : 476,748.84 = 81,166.80 : x
  2. Step 2: Convert to fraction form
    317,832.60/476,748.84 = 81,166.80/x
  3. Step 3: Cross multiply
    317,832.60x = 476,748.84 × 81,166.80
  4. Step 4: Simplify right side
    317,832.60x = 38,696,177,746.51
  5. Step 5: Solve for x
    x = 38,696,177,746.51/317,832.60
  6. Step 6: Final answer
    x = 121,750.18

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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.