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Finding the Fourth Proportional to 67,297.68, 92,870.80 and 39,019.76

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Solution

The fourth proportional to 67,297.68, 92,870.80 and 39,019.76 is: 53,847.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,297.68 : 92,870.80 = 39,019.76 : x
  2. Step 2: Convert to fraction form
    67,297.68/92,870.80 = 39,019.76/x
  3. Step 3: Cross multiply
    67,297.68x = 92,870.80 × 39,019.76
  4. Step 4: Simplify right side
    67,297.68x = 3,623,796,327.01
  5. Step 5: Solve for x
    x = 3,623,796,327.01/67,297.68
  6. Step 6: Final answer
    x = 53,847.27

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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.