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Finding the Fourth Proportional to 115,978.08, 160,371.90 and 92,063.28

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Solution

The fourth proportional to 115,978.08, 160,371.90 and 92,063.28 is: 127,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,978.08 : 160,371.90 = 92,063.28 : x
  2. Step 2: Convert to fraction form
    115,978.08/160,371.90 = 92,063.28/x
  3. Step 3: Cross multiply
    115,978.08x = 160,371.90 × 92,063.28
  4. Step 4: Simplify right side
    115,978.08x = 14,764,363,133.83
  5. Step 5: Solve for x
    x = 14,764,363,133.83/115,978.08
  6. Step 6: Final answer
    x = 127,303.05

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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.