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Finding the Fourth Proportional to 39,121.25, 53,978.87 and 23,210.96

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Solution

The fourth proportional to 39,121.25, 53,978.87 and 23,210.96 is: 32,026.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,121.25 : 53,978.87 = 23,210.96 : x
  2. Step 2: Convert to fraction form
    39,121.25/53,978.87 = 23,210.96/x
  3. Step 3: Cross multiply
    39,121.25x = 53,978.87 × 23,210.96
  4. Step 4: Simplify right side
    39,121.25x = 1,252,901,180.55
  5. Step 5: Solve for x
    x = 1,252,901,180.55/39,121.25
  6. Step 6: Final answer
    x = 32,026.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.