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Finding the Fourth Proportional to 391,719.03, 537,051.76 and 384,633.15

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Solution

The fourth proportional to 391,719.03, 537,051.76 and 384,633.15 is: 527,336.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,719.03 : 537,051.76 = 384,633.15 : x
  2. Step 2: Convert to fraction form
    391,719.03/537,051.76 = 384,633.15/x
  3. Step 3: Cross multiply
    391,719.03x = 537,051.76 × 384,633.15
  4. Step 4: Simplify right side
    391,719.03x = 206,567,910,161.84
  5. Step 5: Solve for x
    x = 206,567,910,161.84/391,719.03
  6. Step 6: Final answer
    x = 527,336.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.