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Finding the Fourth Proportional to 316,551.76, 436,824.84 and 173,284.36

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Solution

The fourth proportional to 316,551.76, 436,824.84 and 173,284.36 is: 239,123.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,551.76 : 436,824.84 = 173,284.36 : x
  2. Step 2: Convert to fraction form
    316,551.76/436,824.84 = 173,284.36/x
  3. Step 3: Cross multiply
    316,551.76x = 436,824.84 × 173,284.36
  4. Step 4: Simplify right side
    316,551.76x = 75,694,912,831.50
  5. Step 5: Solve for x
    x = 75,694,912,831.50/316,551.76
  6. Step 6: Final answer
    x = 239,123.34

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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.