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Finding the Fourth Proportional to 590,978,640.40, 886,467,960.60 and 318,880,848.40

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Solution

The fourth proportional to 590,978,640.40, 886,467,960.60 and 318,880,848.40 is: 478,321,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,978,640.40 : 886,467,960.60 = 318,880,848.40 : x
  2. Step 2: Convert to fraction form
    590,978,640.40/886,467,960.60 = 318,880,848.40/x
  3. Step 3: Cross multiply
    590,978,640.40x = 886,467,960.60 × 318,880,848.40
  4. Step 4: Simplify right side
    590,978,640.40x = 282,677,655,355,545,760
  5. Step 5: Solve for x
    x = 282,677,655,355,545,760/590,978,640.40
  6. Step 6: Final answer
    x = 478,321,272.60

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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.