Home / 351,946.40-527,919.60-85,704.80

Finding the Fourth Proportional to 351,946.40, 527,919.60 and 85,704.80

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Solution

The fourth proportional to 351,946.40, 527,919.60 and 85,704.80 is: 128,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,946.40 : 527,919.60 = 85,704.80 : x
  2. Step 2: Convert to fraction form
    351,946.40/527,919.60 = 85,704.80/x
  3. Step 3: Cross multiply
    351,946.40x = 527,919.60 × 85,704.80
  4. Step 4: Simplify right side
    351,946.40x = 45,245,243,734.08
  5. Step 5: Solve for x
    x = 45,245,243,734.08/351,946.40
  6. Step 6: Final answer
    x = 128,557.20

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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.