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Finding the Fourth Proportional to 2,335.57, 3,501.23 and 853.74

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Solution

The fourth proportional to 2,335.57, 3,501.23 and 853.74 is: 1,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.57 : 3,501.23 = 853.74 : x
  2. Step 2: Convert to fraction form
    2,335.57/3,501.23 = 853.74/x
  3. Step 3: Cross multiply
    2,335.57x = 3,501.23 × 853.74
  4. Step 4: Simplify right side
    2,335.57x = 2,989,142.23
  5. Step 5: Solve for x
    x = 2,989,142.23/2,335.57
  6. Step 6: Final answer
    x = 1,279.84

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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.