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Finding the Fourth Proportional to 98,828.42, 136,383.02 and 53,506.39

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Solution

The fourth proportional to 98,828.42, 136,383.02 and 53,506.39 is: 73,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,828.42 : 136,383.02 = 53,506.39 : x
  2. Step 2: Convert to fraction form
    98,828.42/136,383.02 = 53,506.39/x
  3. Step 3: Cross multiply
    98,828.42x = 136,383.02 × 53,506.39
  4. Step 4: Simplify right side
    98,828.42x = 7,297,363,398.46
  5. Step 5: Solve for x
    x = 7,297,363,398.46/98,828.42
  6. Step 6: Final answer
    x = 73,838.72

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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.