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Finding the Fourth Proportional to 617,118.09, 925,780.08 and 212,293.95

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Solution

The fourth proportional to 617,118.09, 925,780.08 and 212,293.95 is: 318,476.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,118.09 : 925,780.08 = 212,293.95 : x
  2. Step 2: Convert to fraction form
    617,118.09/925,780.08 = 212,293.95/x
  3. Step 3: Cross multiply
    617,118.09x = 925,780.08 × 212,293.95
  4. Step 4: Simplify right side
    617,118.09x = 196,537,510,014.52
  5. Step 5: Solve for x
    x = 196,537,510,014.52/617,118.09
  6. Step 6: Final answer
    x = 318,476.34

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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.