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Finding the Fourth Proportional to 86,205.70, 119,038.62 and 63,583.90

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Solution

The fourth proportional to 86,205.70, 119,038.62 and 63,583.90 is: 87,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,205.70 : 119,038.62 = 63,583.90 : x
  2. Step 2: Convert to fraction form
    86,205.70/119,038.62 = 63,583.90/x
  3. Step 3: Cross multiply
    86,205.70x = 119,038.62 × 63,583.90
  4. Step 4: Simplify right side
    86,205.70x = 7,568,939,710.22
  5. Step 5: Solve for x
    x = 7,568,939,710.22/86,205.70
  6. Step 6: Final answer
    x = 87,800.92

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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.