Home / 351,986.78-528,078.57-115,495.52

Finding the Fourth Proportional to 351,986.78, 528,078.57 and 115,495.52

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Solution

The fourth proportional to 351,986.78, 528,078.57 and 115,495.52 is: 173,275.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,986.78 : 528,078.57 = 115,495.52 : x
  2. Step 2: Convert to fraction form
    351,986.78/528,078.57 = 115,495.52/x
  3. Step 3: Cross multiply
    351,986.78x = 528,078.57 × 115,495.52
  4. Step 4: Simplify right side
    351,986.78x = 60,990,709,043.01
  5. Step 5: Solve for x
    x = 60,990,709,043.01/351,986.78
  6. Step 6: Final answer
    x = 173,275.57

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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.