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Finding the Fourth Proportional to 311,920.06, 430,442.49 and 184,597.78

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Solution

The fourth proportional to 311,920.06, 430,442.49 and 184,597.78 is: 254,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,920.06 : 430,442.49 = 184,597.78 : x
  2. Step 2: Convert to fraction form
    311,920.06/430,442.49 = 184,597.78/x
  3. Step 3: Cross multiply
    311,920.06x = 430,442.49 × 184,597.78
  4. Step 4: Simplify right side
    311,920.06x = 79,458,728,071.67
  5. Step 5: Solve for x
    x = 79,458,728,071.67/311,920.06
  6. Step 6: Final answer
    x = 254,740.68

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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.