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Finding the Fourth Proportional to 75,609.91, 113,421.14 and 23,019.85

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Solution

The fourth proportional to 75,609.91, 113,421.14 and 23,019.85 is: 34,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,609.91 : 113,421.14 = 23,019.85 : x
  2. Step 2: Convert to fraction form
    75,609.91/113,421.14 = 23,019.85/x
  3. Step 3: Cross multiply
    75,609.91x = 113,421.14 × 23,019.85
  4. Step 4: Simplify right side
    75,609.91x = 2,610,937,629.63
  5. Step 5: Solve for x
    x = 2,610,937,629.63/75,609.91
  6. Step 6: Final answer
    x = 34,531.69

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1.5x scale

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.