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Finding the Fourth Proportional to 659,342,898.60, 989,014,347.90 and 168,055,218.60

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Solution

The fourth proportional to 659,342,898.60, 989,014,347.90 and 168,055,218.60 is: 252,082,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,342,898.60 : 989,014,347.90 = 168,055,218.60 : x
  2. Step 2: Convert to fraction form
    659,342,898.60/989,014,347.90 = 168,055,218.60/x
  3. Step 3: Cross multiply
    659,342,898.60x = 989,014,347.90 × 168,055,218.60
  4. Step 4: Simplify right side
    659,342,898.60x = 166,209,022,434,870,944
  5. Step 5: Solve for x
    x = 166,209,022,434,870,944/659,342,898.60
  6. Step 6: Final answer
    x = 252,082,827.90

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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.