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Finding the Fourth Proportional to 77,871.36, 116,815.20 and 35,744.24

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Solution

The fourth proportional to 77,871.36, 116,815.20 and 35,744.24 is: 53,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,871.36 : 116,815.20 = 35,744.24 : x
  2. Step 2: Convert to fraction form
    77,871.36/116,815.20 = 35,744.24/x
  3. Step 3: Cross multiply
    77,871.36x = 116,815.20 × 35,744.24
  4. Step 4: Simplify right side
    77,871.36x = 4,175,470,544.45
  5. Step 5: Solve for x
    x = 4,175,470,544.45/77,871.36
  6. Step 6: Final answer
    x = 53,620.11

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1.5x scale

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.