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Finding the Fourth Proportional to 670,783,758.64, 925,712,138.12 and 373,444,885.71

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Solution

The fourth proportional to 670,783,758.64, 925,712,138.12 and 373,444,885.71 is: 515,370,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,783,758.64 : 925,712,138.12 = 373,444,885.71 : x
  2. Step 2: Convert to fraction form
    670,783,758.64/925,712,138.12 = 373,444,885.71/x
  3. Step 3: Cross multiply
    670,783,758.64x = 925,712,138.12 × 373,444,885.71
  4. Step 4: Simplify right side
    670,783,758.64x = 345,702,463,618,715,904
  5. Step 5: Solve for x
    x = 345,702,463,618,715,904/670,783,758.64
  6. Step 6: Final answer
    x = 515,370,951.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.