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Finding the Fourth Proportional to 70,231.42, 96,895.62 and 39,995.30

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Solution

The fourth proportional to 70,231.42, 96,895.62 and 39,995.30 is: 55,179.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.42 : 96,895.62 = 39,995.30 : x
  2. Step 2: Convert to fraction form
    70,231.42/96,895.62 = 39,995.30/x
  3. Step 3: Cross multiply
    70,231.42x = 96,895.62 × 39,995.30
  4. Step 4: Simplify right side
    70,231.42x = 3,875,369,390.59
  5. Step 5: Solve for x
    x = 3,875,369,390.59/70,231.42
  6. Step 6: Final answer
    x = 55,179.99

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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.