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Finding the Fourth Proportional to 235,586.73, 325,109.44 and 128,156.51

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Solution

The fourth proportional to 235,586.73, 325,109.44 and 128,156.51 is: 176,855.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,586.73 : 325,109.44 = 128,156.51 : x
  2. Step 2: Convert to fraction form
    235,586.73/325,109.44 = 128,156.51/x
  3. Step 3: Cross multiply
    235,586.73x = 325,109.44 × 128,156.51
  4. Step 4: Simplify right side
    235,586.73x = 41,664,892,171.42
  5. Step 5: Solve for x
    x = 41,664,892,171.42/235,586.73
  6. Step 6: Final answer
    x = 176,855.85

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1.5x scale

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.