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Finding the Fourth Proportional to 502,673,597.90, 693,695,949.17 and 276,638,606.30

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Solution

The fourth proportional to 502,673,597.90, 693,695,949.17 and 276,638,606.30 is: 381,764,790.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,673,597.90 : 693,695,949.17 = 276,638,606.30 : x
  2. Step 2: Convert to fraction form
    502,673,597.90/693,695,949.17 = 276,638,606.30/x
  3. Step 3: Cross multiply
    502,673,597.90x = 693,695,949.17 × 276,638,606.30
  4. Step 4: Simplify right side
    502,673,597.90x = 191,903,080,576,250,208
  5. Step 5: Solve for x
    x = 191,903,080,576,250,208/502,673,597.90
  6. Step 6: Final answer
    x = 381,764,790.07

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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.