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Finding the Fourth Proportional to 98,642.84, 136,094.45 and 55,616.94

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Solution

The fourth proportional to 98,642.84, 136,094.45 and 55,616.94 is: 76,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,642.84 : 136,094.45 = 55,616.94 : x
  2. Step 2: Convert to fraction form
    98,642.84/136,094.45 = 55,616.94/x
  3. Step 3: Cross multiply
    98,642.84x = 136,094.45 × 55,616.94
  4. Step 4: Simplify right side
    98,642.84x = 7,569,156,581.90
  5. Step 5: Solve for x
    x = 7,569,156,581.90/98,642.84
  6. Step 6: Final answer
    x = 76,732.96

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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.