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Finding the Fourth Proportional to 559,872,626.80, 839,808,940.20 and 385,276,543.60

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Solution

The fourth proportional to 559,872,626.80, 839,808,940.20 and 385,276,543.60 is: 577,914,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,872,626.80 : 839,808,940.20 = 385,276,543.60 : x
  2. Step 2: Convert to fraction form
    559,872,626.80/839,808,940.20 = 385,276,543.60/x
  3. Step 3: Cross multiply
    559,872,626.80x = 839,808,940.20 × 385,276,543.60
  4. Step 4: Simplify right side
    559,872,626.80x = 323,558,685,764,635,136
  5. Step 5: Solve for x
    x = 323,558,685,764,635,136/559,872,626.80
  6. Step 6: Final answer
    x = 577,914,815.40

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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.