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Finding the Fourth Proportional to 98,554.79, 136,005.62 and 53,842.79

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Solution

The fourth proportional to 98,554.79, 136,005.62 and 53,842.79 is: 74,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,554.79 : 136,005.62 = 53,842.79 : x
  2. Step 2: Convert to fraction form
    98,554.79/136,005.62 = 53,842.79/x
  3. Step 3: Cross multiply
    98,554.79x = 136,005.62 × 53,842.79
  4. Step 4: Simplify right side
    98,554.79x = 7,322,922,107.28
  5. Step 5: Solve for x
    x = 7,322,922,107.28/98,554.79
  6. Step 6: Final answer
    x = 74,303.05

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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.