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Finding the Fourth Proportional to 260,688.56, 391,050.59 and 83,208.93

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Solution

The fourth proportional to 260,688.56, 391,050.59 and 83,208.93 is: 124,819.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,688.56 : 391,050.59 = 83,208.93 : x
  2. Step 2: Convert to fraction form
    260,688.56/391,050.59 = 83,208.93/x
  3. Step 3: Cross multiply
    260,688.56x = 391,050.59 × 83,208.93
  4. Step 4: Simplify right side
    260,688.56x = 32,538,901,169.77
  5. Step 5: Solve for x
    x = 32,538,901,169.77/260,688.56
  6. Step 6: Final answer
    x = 124,819.06

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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.