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Finding the Fourth Proportional to 866,641,662.34, 1,195,967,812.13 and 470,164,651.90

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Solution

The fourth proportional to 866,641,662.34, 1,195,967,812.13 and 470,164,651.90 is: 648,828,477.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,641,662.34 : 1,195,967,812.13 = 470,164,651.90 : x
  2. Step 2: Convert to fraction form
    866,641,662.34/1,195,967,812.13 = 470,164,651.90/x
  3. Step 3: Cross multiply
    866,641,662.34x = 1,195,967,812.13 × 470,164,651.90
  4. Step 4: Simplify right side
    866,641,662.34x = 562,301,790,073,706,048
  5. Step 5: Solve for x
    x = 562,301,790,073,706,048/866,641,662.34
  6. Step 6: Final answer
    x = 648,828,477.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.