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Finding the Fourth Proportional to 235,297.77, 353,015.93 and 85,535.70

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Solution

The fourth proportional to 235,297.77, 353,015.93 and 85,535.70 is: 128,328.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,297.77 : 353,015.93 = 85,535.70 : x
  2. Step 2: Convert to fraction form
    235,297.77/353,015.93 = 85,535.70/x
  3. Step 3: Cross multiply
    235,297.77x = 353,015.93 × 85,535.70
  4. Step 4: Simplify right side
    235,297.77x = 30,195,464,683.70
  5. Step 5: Solve for x
    x = 30,195,464,683.70/235,297.77
  6. Step 6: Final answer
    x = 128,328.73

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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.