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Finding the Fourth Proportional to 72,486.64, 108,703.89 and 25,088.86

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Solution

The fourth proportional to 72,486.64, 108,703.89 and 25,088.86 is: 37,624.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,486.64 : 108,703.89 = 25,088.86 : x
  2. Step 2: Convert to fraction form
    72,486.64/108,703.89 = 25,088.86/x
  3. Step 3: Cross multiply
    72,486.64x = 108,703.89 × 25,088.86
  4. Step 4: Simplify right side
    72,486.64x = 2,727,256,813.55
  5. Step 5: Solve for x
    x = 2,727,256,813.55/72,486.64
  6. Step 6: Final answer
    x = 37,624.27

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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.