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Finding the Fourth Proportional to 98,609.96, 136,081.86 and 53,897.96

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Solution

The fourth proportional to 98,609.96, 136,081.86 and 53,897.96 is: 74,379.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,609.96 : 136,081.86 = 53,897.96 : x
  2. Step 2: Convert to fraction form
    98,609.96/136,081.86 = 53,897.96/x
  3. Step 3: Cross multiply
    98,609.96x = 136,081.86 × 53,897.96
  4. Step 4: Simplify right side
    98,609.96x = 7,334,534,647.01
  5. Step 5: Solve for x
    x = 7,334,534,647.01/98,609.96
  6. Step 6: Final answer
    x = 74,379.25

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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.