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Finding the Fourth Proportional to 347,735.81, 521,603.70 and 189,878.15

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Solution

The fourth proportional to 347,735.81, 521,603.70 and 189,878.15 is: 284,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,735.81 : 521,603.70 = 189,878.15 : x
  2. Step 2: Convert to fraction form
    347,735.81/521,603.70 = 189,878.15/x
  3. Step 3: Cross multiply
    347,735.81x = 521,603.70 × 189,878.15
  4. Step 4: Simplify right side
    347,735.81x = 99,041,145,589.16
  5. Step 5: Solve for x
    x = 99,041,145,589.16/347,735.81
  6. Step 6: Final answer
    x = 284,817.22

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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.