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Finding the Fourth Proportional to 98,678.44, 136,173.54 and 53,966.44

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Solution

The fourth proportional to 98,678.44, 136,173.54 and 53,966.44 is: 74,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,678.44 : 136,173.54 = 53,966.44 : x
  2. Step 2: Convert to fraction form
    98,678.44/136,173.54 = 53,966.44/x
  3. Step 3: Cross multiply
    98,678.44x = 136,173.54 × 53,966.44
  4. Step 4: Simplify right side
    98,678.44x = 7,348,801,176.00
  5. Step 5: Solve for x
    x = 7,348,801,176.00/98,678.44
  6. Step 6: Final answer
    x = 74,472.21

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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.