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Finding the Fourth Proportional to 636,779.88, 878,676.19 and 430,496.84

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Solution

The fourth proportional to 636,779.88, 878,676.19 and 430,496.84 is: 594,031.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,779.88 : 878,676.19 = 430,496.84 : x
  2. Step 2: Convert to fraction form
    636,779.88/878,676.19 = 430,496.84/x
  3. Step 3: Cross multiply
    636,779.88x = 878,676.19 × 430,496.84
  4. Step 4: Simplify right side
    636,779.88x = 378,267,324,298.69
  5. Step 5: Solve for x
    x = 378,267,324,298.69/636,779.88
  6. Step 6: Final answer
    x = 594,031.53

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1.5x scale

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.