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Finding the Fourth Proportional to 497,648.58, 686,538.27 and 316,263.30

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Solution

The fourth proportional to 497,648.58, 686,538.27 and 316,263.30 is: 436,305.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,648.58 : 686,538.27 = 316,263.30 : x
  2. Step 2: Convert to fraction form
    497,648.58/686,538.27 = 316,263.30/x
  3. Step 3: Cross multiply
    497,648.58x = 686,538.27 × 316,263.30
  4. Step 4: Simplify right side
    497,648.58x = 217,126,858,846.49
  5. Step 5: Solve for x
    x = 217,126,858,846.49/497,648.58
  6. Step 6: Final answer
    x = 436,305.59

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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.