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Finding the Fourth Proportional to 472,392,485.70, 708,588,728.55 and 357,601,229.70

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Solution

The fourth proportional to 472,392,485.70, 708,588,728.55 and 357,601,229.70 is: 536,401,844.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,485.70 : 708,588,728.55 = 357,601,229.70 : x
  2. Step 2: Convert to fraction form
    472,392,485.70/708,588,728.55 = 357,601,229.70/x
  3. Step 3: Cross multiply
    472,392,485.70x = 708,588,728.55 × 357,601,229.70
  4. Step 4: Simplify right side
    472,392,485.70x = 253,392,200,681,039,488
  5. Step 5: Solve for x
    x = 253,392,200,681,039,488/472,392,485.70
  6. Step 6: Final answer
    x = 536,401,844.55

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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.