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Finding the Fourth Proportional to 659,339,903.60, 989,009,855.40 and 168,052,223.60

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Solution

The fourth proportional to 659,339,903.60, 989,009,855.40 and 168,052,223.60 is: 252,078,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,339,903.60 : 989,009,855.40 = 168,052,223.60 : x
  2. Step 2: Convert to fraction form
    659,339,903.60/989,009,855.40 = 168,052,223.60/x
  3. Step 3: Cross multiply
    659,339,903.60x = 989,009,855.40 × 168,052,223.60
  4. Step 4: Simplify right side
    659,339,903.60x = 166,205,305,362,284,448
  5. Step 5: Solve for x
    x = 166,205,305,362,284,448/659,339,903.60
  6. Step 6: Final answer
    x = 252,078,335.40

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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.