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Finding the Fourth Proportional to 2,347.60, 3,520.66 and 703.68

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Solution

The fourth proportional to 2,347.60, 3,520.66 and 703.68 is: 1,055.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.60 : 3,520.66 = 703.68 : x
  2. Step 2: Convert to fraction form
    2,347.60/3,520.66 = 703.68/x
  3. Step 3: Cross multiply
    2,347.60x = 3,520.66 × 703.68
  4. Step 4: Simplify right side
    2,347.60x = 2,477,418.03
  5. Step 5: Solve for x
    x = 2,477,418.03/2,347.60
  6. Step 6: Final answer
    x = 1,055.30

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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.