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Finding the Fourth Proportional to 400,352,616.90, 600,619,477.95 and 216,116,138.58

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Solution

The fourth proportional to 400,352,616.90, 600,619,477.95 and 216,116,138.58 is: 324,223,089.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,352,616.90 : 600,619,477.95 = 216,116,138.58 : x
  2. Step 2: Convert to fraction form
    400,352,616.90/600,619,477.95 = 216,116,138.58/x
  3. Step 3: Cross multiply
    400,352,616.90x = 600,619,477.95 × 216,116,138.58
  4. Step 4: Simplify right side
    400,352,616.90x = 129,803,562,328,237,136
  5. Step 5: Solve for x
    x = 129,803,562,328,237,136/400,352,616.90
  6. Step 6: Final answer
    x = 324,223,089.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.