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Finding the Fourth Proportional to 253,813.44, 350,258.40 and 139,091.20

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Solution

The fourth proportional to 253,813.44, 350,258.40 and 139,091.20 is: 191,943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,813.44 : 350,258.40 = 139,091.20 : x
  2. Step 2: Convert to fraction form
    253,813.44/350,258.40 = 139,091.20/x
  3. Step 3: Cross multiply
    253,813.44x = 350,258.40 × 139,091.20
  4. Step 4: Simplify right side
    253,813.44x = 48,717,861,166.08
  5. Step 5: Solve for x
    x = 48,717,861,166.08/253,813.44
  6. Step 6: Final answer
    x = 191,943.58

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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.