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Finding the Fourth Proportional to 70,197.63, 105,233.86 and 25,813.68

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Solution

The fourth proportional to 70,197.63, 105,233.86 and 25,813.68 is: 38,697.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,197.63 : 105,233.86 = 25,813.68 : x
  2. Step 2: Convert to fraction form
    70,197.63/105,233.86 = 25,813.68/x
  3. Step 3: Cross multiply
    70,197.63x = 105,233.86 × 25,813.68
  4. Step 4: Simplify right side
    70,197.63x = 2,716,473,187.20
  5. Step 5: Solve for x
    x = 2,716,473,187.20/70,197.63
  6. Step 6: Final answer
    x = 38,697.51

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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.