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Finding the Fourth Proportional to 25,507.86, 35,188.60 and 21,964.92

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Solution

The fourth proportional to 25,507.86, 35,188.60 and 21,964.92 is: 30,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,507.86 : 35,188.60 = 21,964.92 : x
  2. Step 2: Convert to fraction form
    25,507.86/35,188.60 = 21,964.92/x
  3. Step 3: Cross multiply
    25,507.86x = 35,188.60 × 21,964.92
  4. Step 4: Simplify right side
    25,507.86x = 772,914,897.94
  5. Step 5: Solve for x
    x = 772,914,897.94/25,507.86
  6. Step 6: Final answer
    x = 30,301.05

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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.