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Finding the Fourth Proportional to 603,915.40, 833,588.70 and 389,054.68

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Solution

The fourth proportional to 603,915.40, 833,588.70 and 389,054.68 is: 537,014.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,915.40 : 833,588.70 = 389,054.68 : x
  2. Step 2: Convert to fraction form
    603,915.40/833,588.70 = 389,054.68/x
  3. Step 3: Cross multiply
    603,915.40x = 833,588.70 × 389,054.68
  4. Step 4: Simplify right side
    603,915.40x = 324,311,584,930.12
  5. Step 5: Solve for x
    x = 324,311,584,930.12/603,915.40
  6. Step 6: Final answer
    x = 537,014.93

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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.