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Finding the Fourth Proportional to 659,355.53, 989,113.39 and 186,040.94

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Solution

The fourth proportional to 659,355.53, 989,113.39 and 186,040.94 is: 279,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,355.53 : 989,113.39 = 186,040.94 : x
  2. Step 2: Convert to fraction form
    659,355.53/989,113.39 = 186,040.94/x
  3. Step 3: Cross multiply
    659,355.53x = 989,113.39 × 186,040.94
  4. Step 4: Simplify right side
    659,355.53x = 184,015,586,849.87
  5. Step 5: Solve for x
    x = 184,015,586,849.87/659,355.53
  6. Step 6: Final answer
    x = 279,084.01

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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.