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Finding the Fourth Proportional to 74,385.16, 111,590.06 and 36,946.48

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Solution

The fourth proportional to 74,385.16, 111,590.06 and 36,946.48 is: 55,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,385.16 : 111,590.06 = 36,946.48 : x
  2. Step 2: Convert to fraction form
    74,385.16/111,590.06 = 36,946.48/x
  3. Step 3: Cross multiply
    74,385.16x = 111,590.06 × 36,946.48
  4. Step 4: Simplify right side
    74,385.16x = 4,122,859,919.99
  5. Step 5: Solve for x
    x = 4,122,859,919.99/74,385.16
  6. Step 6: Final answer
    x = 55,425.84

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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.