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Finding the Fourth Proportional to 671,361,665.62, 919,768,763.28 and 646,199,181.93

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Solution

The fourth proportional to 671,361,665.62, 919,768,763.28 and 646,199,181.93 is: 885,296,037.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,361,665.62 : 919,768,763.28 = 646,199,181.93 : x
  2. Step 2: Convert to fraction form
    671,361,665.62/919,768,763.28 = 646,199,181.93/x
  3. Step 3: Cross multiply
    671,361,665.62x = 919,768,763.28 × 646,199,181.93
  4. Step 4: Simplify right side
    671,361,665.62x = 594,353,822,390,431,488
  5. Step 5: Solve for x
    x = 594,353,822,390,431,488/671,361,665.62
  6. Step 6: Final answer
    x = 885,296,037.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.