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Finding the Fourth Proportional to 98,840.52, 136,415.88 and 60,621.21

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Solution

The fourth proportional to 98,840.52, 136,415.88 and 60,621.21 is: 83,667.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,840.52 : 136,415.88 = 60,621.21 : x
  2. Step 2: Convert to fraction form
    98,840.52/136,415.88 = 60,621.21/x
  3. Step 3: Cross multiply
    98,840.52x = 136,415.88 × 60,621.21
  4. Step 4: Simplify right side
    98,840.52x = 8,269,695,708.81
  5. Step 5: Solve for x
    x = 8,269,695,708.81/98,840.52
  6. Step 6: Final answer
    x = 83,667.06

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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.