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Finding the Fourth Proportional to 692,778,732.63, 956,027,031.96 and 375,231,078.42

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Solution

The fourth proportional to 692,778,732.63, 956,027,031.96 and 375,231,078.42 is: 517,814,761.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,778,732.63 : 956,027,031.96 = 375,231,078.42 : x
  2. Step 2: Convert to fraction form
    692,778,732.63/956,027,031.96 = 375,231,078.42/x
  3. Step 3: Cross multiply
    692,778,732.63x = 956,027,031.96 × 375,231,078.42
  4. Step 4: Simplify right side
    692,778,732.63x = 358,731,054,201,022,656
  5. Step 5: Solve for x
    x = 358,731,054,201,022,656/692,778,732.63
  6. Step 6: Final answer
    x = 517,814,761.49

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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.