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Finding the Fourth Proportional to 260,878.77, 391,299.03 and 83,338.11

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Solution

The fourth proportional to 260,878.77, 391,299.03 and 83,338.11 is: 125,001.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,878.77 : 391,299.03 = 83,338.11 : x
  2. Step 2: Convert to fraction form
    260,878.77/391,299.03 = 83,338.11/x
  3. Step 3: Cross multiply
    260,878.77x = 391,299.03 × 83,338.11
  4. Step 4: Simplify right side
    260,878.77x = 32,610,121,605.03
  5. Step 5: Solve for x
    x = 32,610,121,605.03/260,878.77
  6. Step 6: Final answer
    x = 125,001.06

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1.5x scale

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.