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Finding the Fourth Proportional to 71,274.74, 98,355.06 and 39,441.74

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Solution

The fourth proportional to 71,274.74, 98,355.06 and 39,441.74 is: 54,427.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,274.74 : 98,355.06 = 39,441.74 : x
  2. Step 2: Convert to fraction form
    71,274.74/98,355.06 = 39,441.74/x
  3. Step 3: Cross multiply
    71,274.74x = 98,355.06 × 39,441.74
  4. Step 4: Simplify right side
    71,274.74x = 3,879,294,212.43
  5. Step 5: Solve for x
    x = 3,879,294,212.43/71,274.74
  6. Step 6: Final answer
    x = 54,427.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.