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Finding the Fourth Proportional to 504,608,439.60, 756,912,659.40 and 136,142,679.60

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Solution

The fourth proportional to 504,608,439.60, 756,912,659.40 and 136,142,679.60 is: 204,214,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,608,439.60 : 756,912,659.40 = 136,142,679.60 : x
  2. Step 2: Convert to fraction form
    504,608,439.60/756,912,659.40 = 136,142,679.60/x
  3. Step 3: Cross multiply
    504,608,439.60x = 756,912,659.40 × 136,142,679.60
  4. Step 4: Simplify right side
    504,608,439.60x = 103,048,117,673,878,128
  5. Step 5: Solve for x
    x = 103,048,117,673,878,128/504,608,439.60
  6. Step 6: Final answer
    x = 204,214,019.40

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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.