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Finding the Fourth Proportional to 86,927.94, 119,956.41 and 53,387.46

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Solution

The fourth proportional to 86,927.94, 119,956.41 and 53,387.46 is: 73,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,927.94 : 119,956.41 = 53,387.46 : x
  2. Step 2: Convert to fraction form
    86,927.94/119,956.41 = 53,387.46/x
  3. Step 3: Cross multiply
    86,927.94x = 119,956.41 × 53,387.46
  4. Step 4: Simplify right side
    86,927.94x = 6,404,168,040.62
  5. Step 5: Solve for x
    x = 6,404,168,040.62/86,927.94
  6. Step 6: Final answer
    x = 73,672.15

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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.