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Finding the Fourth Proportional to 351,315.98, 526,809.94 and 126,646.82

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Solution

The fourth proportional to 351,315.98, 526,809.94 and 126,646.82 is: 189,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,315.98 : 526,809.94 = 126,646.82 : x
  2. Step 2: Convert to fraction form
    351,315.98/526,809.94 = 126,646.82/x
  3. Step 3: Cross multiply
    351,315.98x = 526,809.94 × 126,646.82
  4. Step 4: Simplify right side
    351,315.98x = 66,718,803,645.39
  5. Step 5: Solve for x
    x = 66,718,803,645.39/351,315.98
  6. Step 6: Final answer
    x = 189,911.10

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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.