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Finding the Fourth Proportional to 211,230.02, 316,864.51 and 69,076.04

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Solution

The fourth proportional to 211,230.02, 316,864.51 and 69,076.04 is: 103,620.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,230.02 : 316,864.51 = 69,076.04 : x
  2. Step 2: Convert to fraction form
    211,230.02/316,864.51 = 69,076.04/x
  3. Step 3: Cross multiply
    211,230.02x = 316,864.51 × 69,076.04
  4. Step 4: Simplify right side
    211,230.02x = 21,887,743,810.33
  5. Step 5: Solve for x
    x = 21,887,743,810.33/211,230.02
  6. Step 6: Final answer
    x = 103,620.42

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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.