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Finding the Fourth Proportional to 63,408.12, 87,504.56 and 34,729

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Solution

The fourth proportional to 63,408.12, 87,504.56 and 34,729 is: 47,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,408.12 : 87,504.56 = 34,729 : x
  2. Step 2: Convert to fraction form
    63,408.12/87,504.56 = 34,729/x
  3. Step 3: Cross multiply
    63,408.12x = 87,504.56 × 34,729
  4. Step 4: Simplify right side
    63,408.12x = 3,038,945,864.24
  5. Step 5: Solve for x
    x = 3,038,945,864.24/63,408.12
  6. Step 6: Final answer
    x = 47,926.76

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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.