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Finding the Fourth Proportional to 446,927,287.20, 670,390,930.80 and 446,927,287.20

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Solution

The fourth proportional to 446,927,287.20, 670,390,930.80 and 446,927,287.20 is: 670,390,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,927,287.20 : 670,390,930.80 = 446,927,287.20 : x
  2. Step 2: Convert to fraction form
    446,927,287.20/670,390,930.80 = 446,927,287.20/x
  3. Step 3: Cross multiply
    446,927,287.20x = 670,390,930.80 × 446,927,287.20
  4. Step 4: Simplify right side
    446,927,287.20x = 299,616,000,065,926,912
  5. Step 5: Solve for x
    x = 299,616,000,065,926,912/446,927,287.20
  6. Step 6: Final answer
    x = 670,390,930.80

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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.