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Finding the Fourth Proportional to 211,566.60, 317,364.30 and 61,806.60

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Solution

The fourth proportional to 211,566.60, 317,364.30 and 61,806.60 is: 92,714.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,566.60 : 317,364.30 = 61,806.60 : x
  2. Step 2: Convert to fraction form
    211,566.60/317,364.30 = 61,806.60/x
  3. Step 3: Cross multiply
    211,566.60x = 317,364.30 × 61,806.60
  4. Step 4: Simplify right side
    211,566.60x = 19,615,208,344.38
  5. Step 5: Solve for x
    x = 19,615,208,344.38/211,566.60
  6. Step 6: Final answer
    x = 92,714.11

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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.