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Finding the Fourth Proportional to 582,694,328.40, 874,041,492.60 and 399,028,318.80

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Solution

The fourth proportional to 582,694,328.40, 874,041,492.60 and 399,028,318.80 is: 598,542,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,694,328.40 : 874,041,492.60 = 399,028,318.80 : x
  2. Step 2: Convert to fraction form
    582,694,328.40/874,041,492.60 = 399,028,318.80/x
  3. Step 3: Cross multiply
    582,694,328.40x = 874,041,492.60 × 399,028,318.80
  4. Step 4: Simplify right side
    582,694,328.40x = 348,767,307,353,620,672
  5. Step 5: Solve for x
    x = 348,767,307,353,620,672/582,694,328.40
  6. Step 6: Final answer
    x = 598,542,478.20

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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.