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Finding the Fourth Proportional to 158,978.85, 238,320.04 and 53,724.21

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Solution

The fourth proportional to 158,978.85, 238,320.04 and 53,724.21 is: 80,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,978.85 : 238,320.04 = 53,724.21 : x
  2. Step 2: Convert to fraction form
    158,978.85/238,320.04 = 53,724.21/x
  3. Step 3: Cross multiply
    158,978.85x = 238,320.04 × 53,724.21
  4. Step 4: Simplify right side
    158,978.85x = 12,803,555,876.17
  5. Step 5: Solve for x
    x = 12,803,555,876.17/158,978.85
  6. Step 6: Final answer
    x = 80,536.22

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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.