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Finding the Fourth Proportional to 211,416.87, 317,171.95 and 61,668.88

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Solution

The fourth proportional to 211,416.87, 317,171.95 and 61,668.88 is: 92,516.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,416.87 : 317,171.95 = 61,668.88 : x
  2. Step 2: Convert to fraction form
    211,416.87/317,171.95 = 61,668.88/x
  3. Step 3: Cross multiply
    211,416.87x = 317,171.95 × 61,668.88
  4. Step 4: Simplify right side
    211,416.87x = 19,559,637,338.06
  5. Step 5: Solve for x
    x = 19,559,637,338.06/211,416.87
  6. Step 6: Final answer
    x = 92,516.92

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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.