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Finding the Fourth Proportional to 98,876.99, 136,449.92 and 53,554.86

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Solution

The fourth proportional to 98,876.99, 136,449.92 and 53,554.86 is: 73,905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,876.99 : 136,449.92 = 53,554.86 : x
  2. Step 2: Convert to fraction form
    98,876.99/136,449.92 = 53,554.86/x
  3. Step 3: Cross multiply
    98,876.99x = 136,449.92 × 53,554.86
  4. Step 4: Simplify right side
    98,876.99x = 7,307,556,094.84
  5. Step 5: Solve for x
    x = 7,307,556,094.84/98,876.99
  6. Step 6: Final answer
    x = 73,905.53

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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.