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Finding the Fourth Proportional to 70,504.40, 105,686.52 and 35,336.72

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Solution

The fourth proportional to 70,504.40, 105,686.52 and 35,336.72 is: 52,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,504.40 : 105,686.52 = 35,336.72 : x
  2. Step 2: Convert to fraction form
    70,504.40/105,686.52 = 35,336.72/x
  3. Step 3: Cross multiply
    70,504.40x = 105,686.52 × 35,336.72
  4. Step 4: Simplify right side
    70,504.40x = 3,734,614,965.01
  5. Step 5: Solve for x
    x = 3,734,614,965.01/70,504.40
  6. Step 6: Final answer
    x = 52,969.96

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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.