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Finding the Fourth Proportional to 47,265.68, 70,911.68 and 20,613.99

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Solution

The fourth proportional to 47,265.68, 70,911.68 and 20,613.99 is: 30,926.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,265.68 : 70,911.68 = 20,613.99 : x
  2. Step 2: Convert to fraction form
    47,265.68/70,911.68 = 20,613.99/x
  3. Step 3: Cross multiply
    47,265.68x = 70,911.68 × 20,613.99
  4. Step 4: Simplify right side
    47,265.68x = 1,461,772,883.23
  5. Step 5: Solve for x
    x = 1,461,772,883.23/47,265.68
  6. Step 6: Final answer
    x = 30,926.73

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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.