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Finding the Fourth Proportional to 98,668.58, 136,160.61 and 53,956.58

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Solution

The fourth proportional to 98,668.58, 136,160.61 and 53,956.58 is: 74,458.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,668.58 : 136,160.61 = 53,956.58 : x
  2. Step 2: Convert to fraction form
    98,668.58/136,160.61 = 53,956.58/x
  3. Step 3: Cross multiply
    98,668.58x = 136,160.61 × 53,956.58
  4. Step 4: Simplify right side
    98,668.58x = 7,346,760,846.31
  5. Step 5: Solve for x
    x = 7,346,760,846.31/98,668.58
  6. Step 6: Final answer
    x = 74,458.97

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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.