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Finding the Fourth Proportional to 98,991.48, 136,598 and 60,752.64

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Solution

The fourth proportional to 98,991.48, 136,598 and 60,752.64 is: 83,832.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,991.48 : 136,598 = 60,752.64 : x
  2. Step 2: Convert to fraction form
    98,991.48/136,598 = 60,752.64/x
  3. Step 3: Cross multiply
    98,991.48x = 136,598 × 60,752.64
  4. Step 4: Simplify right side
    98,991.48x = 8,298,689,118.72
  5. Step 5: Solve for x
    x = 8,298,689,118.72/98,991.48
  6. Step 6: Final answer
    x = 83,832.36

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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.