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Finding the Fourth Proportional to 86,574.84, 129,983.06 and 44,490.59

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Solution

The fourth proportional to 86,574.84, 129,983.06 and 44,490.59 is: 66,797.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,574.84 : 129,983.06 = 44,490.59 : x
  2. Step 2: Convert to fraction form
    86,574.84/129,983.06 = 44,490.59/x
  3. Step 3: Cross multiply
    86,574.84x = 129,983.06 × 44,490.59
  4. Step 4: Simplify right side
    86,574.84x = 5,783,023,029.41
  5. Step 5: Solve for x
    x = 5,783,023,029.41/86,574.84
  6. Step 6: Final answer
    x = 66,797.96

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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.