Home / 352,134.10-528,206.72-85,899.65

Finding the Fourth Proportional to 352,134.10, 528,206.72 and 85,899.65

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Solution

The fourth proportional to 352,134.10, 528,206.72 and 85,899.65 is: 128,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,134.10 : 528,206.72 = 85,899.65 : x
  2. Step 2: Convert to fraction form
    352,134.10/528,206.72 = 85,899.65/x
  3. Step 3: Cross multiply
    352,134.10x = 528,206.72 × 85,899.65
  4. Step 4: Simplify right side
    352,134.10x = 45,372,772,375.65
  5. Step 5: Solve for x
    x = 45,372,772,375.65/352,134.10
  6. Step 6: Final answer
    x = 128,850.83

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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.