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Finding the Fourth Proportional to 76,991.40, 115,476.84 and 24,406.20

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Solution

The fourth proportional to 76,991.40, 115,476.84 and 24,406.20 is: 36,606.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,991.40 : 115,476.84 = 24,406.20 : x
  2. Step 2: Convert to fraction form
    76,991.40/115,476.84 = 24,406.20/x
  3. Step 3: Cross multiply
    76,991.40x = 115,476.84 × 24,406.20
  4. Step 4: Simplify right side
    76,991.40x = 2,818,350,852.41
  5. Step 5: Solve for x
    x = 2,818,350,852.41/76,991.40
  6. Step 6: Final answer
    x = 36,606.05

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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.