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Finding the Fourth Proportional to 617,701,379.78, 926,551,287.22 and 157,639,559.42

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Solution

The fourth proportional to 617,701,379.78, 926,551,287.22 and 157,639,559.42 is: 236,459,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,701,379.78 : 926,551,287.22 = 157,639,559.42 : x
  2. Step 2: Convert to fraction form
    617,701,379.78/926,551,287.22 = 157,639,559.42/x
  3. Step 3: Cross multiply
    617,701,379.78x = 926,551,287.22 × 157,639,559.42
  4. Step 4: Simplify right side
    617,701,379.78x = 146,061,136,697,394,656
  5. Step 5: Solve for x
    x = 146,061,136,697,394,656/617,701,379.78
  6. Step 6: Final answer
    x = 236,459,139.45

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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.