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Finding the Fourth Proportional to 98,566.15, 135,978.37 and 60,327.40

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Solution

The fourth proportional to 98,566.15, 135,978.37 and 60,327.40 is: 83,225.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,566.15 : 135,978.37 = 60,327.40 : x
  2. Step 2: Convert to fraction form
    98,566.15/135,978.37 = 60,327.40/x
  3. Step 3: Cross multiply
    98,566.15x = 135,978.37 × 60,327.40
  4. Step 4: Simplify right side
    98,566.15x = 8,203,221,518.34
  5. Step 5: Solve for x
    x = 8,203,221,518.34/98,566.15
  6. Step 6: Final answer
    x = 83,225.54

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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.