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Finding the Fourth Proportional to 590,978,639.40, 886,467,959.10 and 318,880,847.40

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Solution

The fourth proportional to 590,978,639.40, 886,467,959.10 and 318,880,847.40 is: 478,321,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,978,639.40 : 886,467,959.10 = 318,880,847.40 : x
  2. Step 2: Convert to fraction form
    590,978,639.40/886,467,959.10 = 318,880,847.40/x
  3. Step 3: Cross multiply
    590,978,639.40x = 886,467,959.10 × 318,880,847.40
  4. Step 4: Simplify right side
    590,978,639.40x = 282,677,653,990,756,512
  5. Step 5: Solve for x
    x = 282,677,653,990,756,512/590,978,639.40
  6. Step 6: Final answer
    x = 478,321,271.10

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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.