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Finding the Fourth Proportional to 559,872,880.40, 839,809,320.60 and 444,231,318.80

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Solution

The fourth proportional to 559,872,880.40, 839,809,320.60 and 444,231,318.80 is: 666,346,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,872,880.40 : 839,809,320.60 = 444,231,318.80 : x
  2. Step 2: Convert to fraction form
    559,872,880.40/839,809,320.60 = 444,231,318.80/x
  3. Step 3: Cross multiply
    559,872,880.40x = 839,809,320.60 × 444,231,318.80
  4. Step 4: Simplify right side
    559,872,880.40x = 373,069,602,030,670,016
  5. Step 5: Solve for x
    x = 373,069,602,030,670,016/559,872,880.40
  6. Step 6: Final answer
    x = 666,346,978.20

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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.