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Finding the Fourth Proportional to 79,224, 118,862.46 and 25,918.40

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Solution

The fourth proportional to 79,224, 118,862.46 and 25,918.40 is: 38,886.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,224 : 118,862.46 = 25,918.40 : x
  2. Step 2: Convert to fraction form
    79,224/118,862.46 = 25,918.40/x
  3. Step 3: Cross multiply
    79,224x = 118,862.46 × 25,918.40
  4. Step 4: Simplify right side
    79,224x = 3,080,724,783.26
  5. Step 5: Solve for x
    x = 3,080,724,783.26/79,224
  6. Step 6: Final answer
    x = 38,886.26

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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.