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Finding the Fourth Proportional to 354,485.96, 489,188.74 and 193,338.12

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Solution

The fourth proportional to 354,485.96, 489,188.74 and 193,338.12 is: 266,805.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,485.96 : 489,188.74 = 193,338.12 : x
  2. Step 2: Convert to fraction form
    354,485.96/489,188.74 = 193,338.12/x
  3. Step 3: Cross multiply
    354,485.96x = 489,188.74 × 193,338.12
  4. Step 4: Simplify right side
    354,485.96x = 94,578,831,316.77
  5. Step 5: Solve for x
    x = 94,578,831,316.77/354,485.96
  6. Step 6: Final answer
    x = 266,805.58

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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.