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Finding the Fourth Proportional to 209,952,462.80, 314,928,694.20 and 166,114,485.20

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Solution

The fourth proportional to 209,952,462.80, 314,928,694.20 and 166,114,485.20 is: 249,171,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,462.80 : 314,928,694.20 = 166,114,485.20 : x
  2. Step 2: Convert to fraction form
    209,952,462.80/314,928,694.20 = 166,114,485.20/x
  3. Step 3: Cross multiply
    209,952,462.80x = 314,928,694.20 × 166,114,485.20
  4. Step 4: Simplify right side
    209,952,462.80x = 52,314,217,911,741,224
  5. Step 5: Solve for x
    x = 52,314,217,911,741,224/209,952,462.80
  6. Step 6: Final answer
    x = 249,171,727.80

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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.