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Finding the Fourth Proportional to 231,628.40, 346,859.40 and 152,313.20

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Solution

The fourth proportional to 231,628.40, 346,859.40 and 152,313.20 is: 228,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,628.40 : 346,859.40 = 152,313.20 : x
  2. Step 2: Convert to fraction form
    231,628.40/346,859.40 = 152,313.20/x
  3. Step 3: Cross multiply
    231,628.40x = 346,859.40 × 152,313.20
  4. Step 4: Simplify right side
    231,628.40x = 52,831,265,164.08
  5. Step 5: Solve for x
    x = 52,831,265,164.08/231,628.40
  6. Step 6: Final answer
    x = 228,086.30

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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.