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Finding the Fourth Proportional to 74,973.42, 112,404.57 and 45,384.26

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Solution

The fourth proportional to 74,973.42, 112,404.57 and 45,384.26 is: 68,042.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,973.42 : 112,404.57 = 45,384.26 : x
  2. Step 2: Convert to fraction form
    74,973.42/112,404.57 = 45,384.26/x
  3. Step 3: Cross multiply
    74,973.42x = 112,404.57 × 45,384.26
  4. Step 4: Simplify right side
    74,973.42x = 5,101,397,668.05
  5. Step 5: Solve for x
    x = 5,101,397,668.05/74,973.42
  6. Step 6: Final answer
    x = 68,042.75

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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.