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Finding the Fourth Proportional to 211,210.44, 316,782.60 and 69,054.60

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Solution

The fourth proportional to 211,210.44, 316,782.60 and 69,054.60 is: 103,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,210.44 : 316,782.60 = 69,054.60 : x
  2. Step 2: Convert to fraction form
    211,210.44/316,782.60 = 69,054.60/x
  3. Step 3: Cross multiply
    211,210.44x = 316,782.60 × 69,054.60
  4. Step 4: Simplify right side
    211,210.44x = 21,875,295,729.96
  5. Step 5: Solve for x
    x = 21,875,295,729.96/211,210.44
  6. Step 6: Final answer
    x = 103,571.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.