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Finding the Fourth Proportional to 693,836,654.61, 957,708,987 and 446,318,008.86

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Solution

The fourth proportional to 693,836,654.61, 957,708,987 and 446,318,008.86 is: 616,056,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,836,654.61 : 957,708,987 = 446,318,008.86 : x
  2. Step 2: Convert to fraction form
    693,836,654.61/957,708,987 = 446,318,008.86/x
  3. Step 3: Cross multiply
    693,836,654.61x = 957,708,987 × 446,318,008.86
  4. Step 4: Simplify right side
    693,836,654.61x = 427,442,768,145,167,616
  5. Step 5: Solve for x
    x = 427,442,768,145,167,616/693,836,654.61
  6. Step 6: Final answer
    x = 616,056,769.71

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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.