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Finding the Fourth Proportional to 316,912.16, 437,342.22 and 173,669.13

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Solution

The fourth proportional to 316,912.16, 437,342.22 and 173,669.13 is: 239,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,912.16 : 437,342.22 = 173,669.13 : x
  2. Step 2: Convert to fraction form
    316,912.16/437,342.22 = 173,669.13/x
  3. Step 3: Cross multiply
    316,912.16x = 437,342.22 × 173,669.13
  4. Step 4: Simplify right side
    316,912.16x = 75,952,840,672.96
  5. Step 5: Solve for x
    x = 75,952,840,672.96/316,912.16
  6. Step 6: Final answer
    x = 239,665.28

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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.