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Finding the Fourth Proportional to 34,245.76, 47,246.16 and 21,493.60

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Solution

The fourth proportional to 34,245.76, 47,246.16 and 21,493.60 is: 29,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,245.76 : 47,246.16 = 21,493.60 : x
  2. Step 2: Convert to fraction form
    34,245.76/47,246.16 = 21,493.60/x
  3. Step 3: Cross multiply
    34,245.76x = 47,246.16 × 21,493.60
  4. Step 4: Simplify right side
    34,245.76x = 1,015,490,064.58
  5. Step 5: Solve for x
    x = 1,015,490,064.58/34,245.76
  6. Step 6: Final answer
    x = 29,653.02

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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.