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Finding the Fourth Proportional to 35,425.99, 53,128.90 and 12,051.91

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Solution

The fourth proportional to 35,425.99, 53,128.90 and 12,051.91 is: 18,074.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,425.99 : 53,128.90 = 12,051.91 : x
  2. Step 2: Convert to fraction form
    35,425.99/53,128.90 = 12,051.91/x
  3. Step 3: Cross multiply
    35,425.99x = 53,128.90 × 12,051.91
  4. Step 4: Simplify right side
    35,425.99x = 640,304,721.20
  5. Step 5: Solve for x
    x = 640,304,721.20/35,425.99
  6. Step 6: Final answer
    x = 18,074.43

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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.