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Finding the Fourth Proportional to 209,952,291.60, 314,928,437.40 and 133,613,744.40

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Solution

The fourth proportional to 209,952,291.60, 314,928,437.40 and 133,613,744.40 is: 200,420,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,291.60 : 314,928,437.40 = 133,613,744.40 : x
  2. Step 2: Convert to fraction form
    209,952,291.60/314,928,437.40 = 133,613,744.40/x
  3. Step 3: Cross multiply
    209,952,291.60x = 314,928,437.40 × 133,613,744.40
  4. Step 4: Simplify right side
    209,952,291.60x = 42,078,767,739,055,000
  5. Step 5: Solve for x
    x = 42,078,767,739,055,000/209,952,291.60
  6. Step 6: Final answer
    x = 200,420,616.60

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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.