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Finding the Fourth Proportional to 98,671.58, 136,164.75 and 53,959.58

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Solution

The fourth proportional to 98,671.58, 136,164.75 and 53,959.58 is: 74,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,671.58 : 136,164.75 = 53,959.58 : x
  2. Step 2: Convert to fraction form
    98,671.58/136,164.75 = 53,959.58/x
  3. Step 3: Cross multiply
    98,671.58x = 136,164.75 × 53,959.58
  4. Step 4: Simplify right side
    98,671.58x = 7,347,392,720.81
  5. Step 5: Solve for x
    x = 7,347,392,720.81/98,671.58
  6. Step 6: Final answer
    x = 74,463.11

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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.