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Finding the Fourth Proportional to 70,336.95, 105,505.60 and 17,746.43

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Solution

The fourth proportional to 70,336.95, 105,505.60 and 17,746.43 is: 26,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,336.95 : 105,505.60 = 17,746.43 : x
  2. Step 2: Convert to fraction form
    70,336.95/105,505.60 = 17,746.43/x
  3. Step 3: Cross multiply
    70,336.95x = 105,505.60 × 17,746.43
  4. Step 4: Simplify right side
    70,336.95x = 1,872,347,745.01
  5. Step 5: Solve for x
    x = 1,872,347,745.01/70,336.95
  6. Step 6: Final answer
    x = 26,619.69

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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.