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Finding the Fourth Proportional to 70,467.20, 105,700.80 and 44,201.60

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Solution

The fourth proportional to 70,467.20, 105,700.80 and 44,201.60 is: 66,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,467.20 : 105,700.80 = 44,201.60 : x
  2. Step 2: Convert to fraction form
    70,467.20/105,700.80 = 44,201.60/x
  3. Step 3: Cross multiply
    70,467.20x = 105,700.80 × 44,201.60
  4. Step 4: Simplify right side
    70,467.20x = 4,672,144,481.28
  5. Step 5: Solve for x
    x = 4,672,144,481.28/70,467.20
  6. Step 6: Final answer
    x = 66,302.40

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1.5x scale

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.