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Finding the Fourth Proportional to 673,342,429.28, 929,854,266.64 and 636,659,041.76

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Solution

The fourth proportional to 673,342,429.28, 929,854,266.64 and 636,659,041.76 is: 879,196,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,342,429.28 : 929,854,266.64 = 636,659,041.76 : x
  2. Step 2: Convert to fraction form
    673,342,429.28/929,854,266.64 = 636,659,041.76/x
  3. Step 3: Cross multiply
    673,342,429.28x = 929,854,266.64 × 636,659,041.76
  4. Step 4: Simplify right side
    673,342,429.28x = 592,000,126,375,469,952
  5. Step 5: Solve for x
    x = 592,000,126,375,469,952/673,342,429.28
  6. Step 6: Final answer
    x = 879,196,231.56

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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.