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Finding the Fourth Proportional to 2,334.80, 3,501.16 and 690.77

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Solution

The fourth proportional to 2,334.80, 3,501.16 and 690.77 is: 1,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.80 : 3,501.16 = 690.77 : x
  2. Step 2: Convert to fraction form
    2,334.80/3,501.16 = 690.77/x
  3. Step 3: Cross multiply
    2,334.80x = 3,501.16 × 690.77
  4. Step 4: Simplify right side
    2,334.80x = 2,418,503.32
  5. Step 5: Solve for x
    x = 2,418,503.32/2,334.80
  6. Step 6: Final answer
    x = 1,035.85

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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.