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Finding the Fourth Proportional to 659,414.40, 989,121.60 and 186,093.60

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Solution

The fourth proportional to 659,414.40, 989,121.60 and 186,093.60 is: 279,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,414.40 : 989,121.60 = 186,093.60 : x
  2. Step 2: Convert to fraction form
    659,414.40/989,121.60 = 186,093.60/x
  3. Step 3: Cross multiply
    659,414.40x = 989,121.60 × 186,093.60
  4. Step 4: Simplify right side
    659,414.40x = 184,069,199,381.76
  5. Step 5: Solve for x
    x = 184,069,199,381.76/659,414.40
  6. Step 6: Final answer
    x = 279,140.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.