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Finding the Fourth Proportional to 316,466.31, 436,706.74 and 173,198.64

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Solution

The fourth proportional to 316,466.31, 436,706.74 and 173,198.64 is: 239,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,466.31 : 436,706.74 = 173,198.64 : x
  2. Step 2: Convert to fraction form
    316,466.31/436,706.74 = 173,198.64/x
  3. Step 3: Cross multiply
    316,466.31x = 436,706.74 × 173,198.64
  4. Step 4: Simplify right side
    316,466.31x = 75,637,013,446.83
  5. Step 5: Solve for x
    x = 75,637,013,446.83/316,466.31
  6. Step 6: Final answer
    x = 239,004.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.