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Finding the Fourth Proportional to 675,883,642.56, 932,612,888.16 and 393,672,528.96

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Solution

The fourth proportional to 675,883,642.56, 932,612,888.16 and 393,672,528.96 is: 543,206,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,883,642.56 : 932,612,888.16 = 393,672,528.96 : x
  2. Step 2: Convert to fraction form
    675,883,642.56/932,612,888.16 = 393,672,528.96/x
  3. Step 3: Cross multiply
    675,883,642.56x = 932,612,888.16 × 393,672,528.96
  4. Step 4: Simplify right side
    675,883,642.56x = 367,144,074,222,636,800
  5. Step 5: Solve for x
    x = 367,144,074,222,636,800/675,883,642.56
  6. Step 6: Final answer
    x = 543,206,035.93

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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.