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Finding the Fourth Proportional to 594,672.96, 821,329.80 and 391,631.50

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Solution

The fourth proportional to 594,672.96, 821,329.80 and 391,631.50 is: 540,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,672.96 : 821,329.80 = 391,631.50 : x
  2. Step 2: Convert to fraction form
    594,672.96/821,329.80 = 391,631.50/x
  3. Step 3: Cross multiply
    594,672.96x = 821,329.80 × 391,631.50
  4. Step 4: Simplify right side
    594,672.96x = 321,658,621,568.70
  5. Step 5: Solve for x
    x = 321,658,621,568.70/594,672.96
  6. Step 6: Final answer
    x = 540,900.03

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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.