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Finding the Fourth Proportional to 98,967.45, 136,593.36 and 56,525.98

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Solution

The fourth proportional to 98,967.45, 136,593.36 and 56,525.98 is: 78,016.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,967.45 : 136,593.36 = 56,525.98 : x
  2. Step 2: Convert to fraction form
    98,967.45/136,593.36 = 56,525.98/x
  3. Step 3: Cross multiply
    98,967.45x = 136,593.36 × 56,525.98
  4. Step 4: Simplify right side
    98,967.45x = 7,721,073,535.49
  5. Step 5: Solve for x
    x = 7,721,073,535.49/98,967.45
  6. Step 6: Final answer
    x = 78,016.29

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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.