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Finding the Fourth Proportional to 524,106.40, 786,742.80 and 287,910.40

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Solution

The fourth proportional to 524,106.40, 786,742.80 and 287,910.40 is: 432,185.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,106.40 : 786,742.80 = 287,910.40 : x
  2. Step 2: Convert to fraction form
    524,106.40/786,742.80 = 287,910.40/x
  3. Step 3: Cross multiply
    524,106.40x = 786,742.80 × 287,910.40
  4. Step 4: Simplify right side
    524,106.40x = 226,511,434,245.12
  5. Step 5: Solve for x
    x = 226,511,434,245.12/524,106.40
  6. Step 6: Final answer
    x = 432,185.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.