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Finding the Fourth Proportional to 211,616.93, 317,419.25 and 61,860.74

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Solution

The fourth proportional to 211,616.93, 317,419.25 and 61,860.74 is: 92,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,616.93 : 317,419.25 = 61,860.74 : x
  2. Step 2: Convert to fraction form
    211,616.93/317,419.25 = 61,860.74/x
  3. Step 3: Cross multiply
    211,616.93x = 317,419.25 × 61,860.74
  4. Step 4: Simplify right side
    211,616.93x = 19,635,790,411.47
  5. Step 5: Solve for x
    x = 19,635,790,411.47/211,616.93
  6. Step 6: Final answer
    x = 92,789.32

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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.