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Finding the Fourth Proportional to 211,363.54, 316,878.55 and 104,784.19

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Solution

The fourth proportional to 211,363.54, 316,878.55 and 104,784.19 is: 157,093.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,363.54 : 316,878.55 = 104,784.19 : x
  2. Step 2: Convert to fraction form
    211,363.54/316,878.55 = 104,784.19/x
  3. Step 3: Cross multiply
    211,363.54x = 316,878.55 × 104,784.19
  4. Step 4: Simplify right side
    211,363.54x = 33,203,862,190.12
  5. Step 5: Solve for x
    x = 33,203,862,190.12/211,363.54
  6. Step 6: Final answer
    x = 157,093.61

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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.