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Finding the Fourth Proportional to 86,698.64, 119,184.52 and 74,554.58

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Solution

The fourth proportional to 86,698.64, 119,184.52 and 74,554.58 is: 102,490.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,698.64 : 119,184.52 = 74,554.58 : x
  2. Step 2: Convert to fraction form
    86,698.64/119,184.52 = 74,554.58/x
  3. Step 3: Cross multiply
    86,698.64x = 119,184.52 × 74,554.58
  4. Step 4: Simplify right side
    86,698.64x = 8,885,751,831.10
  5. Step 5: Solve for x
    x = 8,885,751,831.10/86,698.64
  6. Step 6: Final answer
    x = 102,490.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.