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Finding the Fourth Proportional to 64,919.40, 97,404.70 and 25,469.80

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Solution

The fourth proportional to 64,919.40, 97,404.70 and 25,469.80 is: 38,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,919.40 : 97,404.70 = 25,469.80 : x
  2. Step 2: Convert to fraction form
    64,919.40/97,404.70 = 25,469.80/x
  3. Step 3: Cross multiply
    64,919.40x = 97,404.70 × 25,469.80
  4. Step 4: Simplify right side
    64,919.40x = 2,480,878,228.06
  5. Step 5: Solve for x
    x = 2,480,878,228.06/64,919.40
  6. Step 6: Final answer
    x = 38,214.74

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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.