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Finding the Fourth Proportional to 70,720.63, 97,596.98 and 38,891.95

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Solution

The fourth proportional to 70,720.63, 97,596.98 and 38,891.95 is: 53,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,720.63 : 97,596.98 = 38,891.95 : x
  2. Step 2: Convert to fraction form
    70,720.63/97,596.98 = 38,891.95/x
  3. Step 3: Cross multiply
    70,720.63x = 97,596.98 × 38,891.95
  4. Step 4: Simplify right side
    70,720.63x = 3,795,736,671.85
  5. Step 5: Solve for x
    x = 3,795,736,671.85/70,720.63
  6. Step 6: Final answer
    x = 53,672.27

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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.