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Finding the Fourth Proportional to 86,956.84, 130,456.44 and 26,983.84

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Solution

The fourth proportional to 86,956.84, 130,456.44 and 26,983.84 is: 40,482.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,956.84 : 130,456.44 = 26,983.84 : x
  2. Step 2: Convert to fraction form
    86,956.84/130,456.44 = 26,983.84/x
  3. Step 3: Cross multiply
    86,956.84x = 130,456.44 × 26,983.84
  4. Step 4: Simplify right side
    86,956.84x = 3,520,215,703.93
  5. Step 5: Solve for x
    x = 3,520,215,703.93/86,956.84
  6. Step 6: Final answer
    x = 40,482.33

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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.