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Finding the Fourth Proportional to 125,093.40, 172,619.58 and 70,642.27

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Solution

The fourth proportional to 125,093.40, 172,619.58 and 70,642.27 is: 97,481.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,093.40 : 172,619.58 = 70,642.27 : x
  2. Step 2: Convert to fraction form
    125,093.40/172,619.58 = 70,642.27/x
  3. Step 3: Cross multiply
    125,093.40x = 172,619.58 × 70,642.27
  4. Step 4: Simplify right side
    125,093.40x = 12,194,238,977.65
  5. Step 5: Solve for x
    x = 12,194,238,977.65/125,093.40
  6. Step 6: Final answer
    x = 97,481.07

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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.