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Finding the Fourth Proportional to 354,294,858.40, 531,442,287.60 and 354,294,858.40

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Solution

The fourth proportional to 354,294,858.40, 531,442,287.60 and 354,294,858.40 is: 531,442,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294,858.40 : 531,442,287.60 = 354,294,858.40 : x
  2. Step 2: Convert to fraction form
    354,294,858.40/531,442,287.60 = 354,294,858.40/x
  3. Step 3: Cross multiply
    354,294,858.40x = 531,442,287.60 × 354,294,858.40
  4. Step 4: Simplify right side
    354,294,858.40x = 188,287,270,033,014,080
  5. Step 5: Solve for x
    x = 188,287,270,033,014,080/354,294,858.40
  6. Step 6: Final answer
    x = 531,442,287.60

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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.