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Finding the Fourth Proportional to 86,808.65, 119,760.66 and 56,583.36

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Solution

The fourth proportional to 86,808.65, 119,760.66 and 56,583.36 is: 78,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,808.65 : 119,760.66 = 56,583.36 : x
  2. Step 2: Convert to fraction form
    86,808.65/119,760.66 = 56,583.36/x
  3. Step 3: Cross multiply
    86,808.65x = 119,760.66 × 56,583.36
  4. Step 4: Simplify right side
    86,808.65x = 6,776,460,538.62
  5. Step 5: Solve for x
    x = 6,776,460,538.62/86,808.65
  6. Step 6: Final answer
    x = 78,062.05

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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.