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Finding the Fourth Proportional to 70,380.21, 97,124.72 and 38,549.64

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Solution

The fourth proportional to 70,380.21, 97,124.72 and 38,549.64 is: 53,198.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,380.21 : 97,124.72 = 38,549.64 : x
  2. Step 2: Convert to fraction form
    70,380.21/97,124.72 = 38,549.64/x
  3. Step 3: Cross multiply
    70,380.21x = 97,124.72 × 38,549.64
  4. Step 4: Simplify right side
    70,380.21x = 3,744,122,798.35
  5. Step 5: Solve for x
    x = 3,744,122,798.35/70,380.21
  6. Step 6: Final answer
    x = 53,198.52

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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.