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Finding the Fourth Proportional to 70,672.64, 97,530.30 and 38,843.60

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Solution

The fourth proportional to 70,672.64, 97,530.30 and 38,843.60 is: 53,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.64 : 97,530.30 = 38,843.60 : x
  2. Step 2: Convert to fraction form
    70,672.64/97,530.30 = 38,843.60/x
  3. Step 3: Cross multiply
    70,672.64x = 97,530.30 × 38,843.60
  4. Step 4: Simplify right side
    70,672.64x = 3,788,427,473.43
  5. Step 5: Solve for x
    x = 3,788,427,473.43/70,672.64
  6. Step 6: Final answer
    x = 53,605.30

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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.