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Finding the Fourth Proportional to 318,887.85, 440,065.84 and 173,693.18

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Solution

The fourth proportional to 318,887.85, 440,065.84 and 173,693.18 is: 239,696.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,887.85 : 440,065.84 = 173,693.18 : x
  2. Step 2: Convert to fraction form
    318,887.85/440,065.84 = 173,693.18/x
  3. Step 3: Cross multiply
    318,887.85x = 440,065.84 × 173,693.18
  4. Step 4: Simplify right side
    318,887.85x = 76,436,436,150.58
  5. Step 5: Solve for x
    x = 76,436,436,150.58/318,887.85
  6. Step 6: Final answer
    x = 239,696.93

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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.