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Finding the Fourth Proportional to 253,920.96, 350,410.32 and 139,199.40

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Solution

The fourth proportional to 253,920.96, 350,410.32 and 139,199.40 is: 192,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,920.96 : 350,410.32 = 139,199.40 : x
  2. Step 2: Convert to fraction form
    253,920.96/350,410.32 = 139,199.40/x
  3. Step 3: Cross multiply
    253,920.96x = 350,410.32 × 139,199.40
  4. Step 4: Simplify right side
    253,920.96x = 48,776,906,297.81
  5. Step 5: Solve for x
    x = 48,776,906,297.81/253,920.96
  6. Step 6: Final answer
    x = 192,094.84

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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.