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Finding the Fourth Proportional to 1,225,323.40, 1,839,734.70 and 959,384.20

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Solution

The fourth proportional to 1,225,323.40, 1,839,734.70 and 959,384.20 is: 1,440,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,323.40 : 1,839,734.70 = 959,384.20 : x
  2. Step 2: Convert to fraction form
    1,225,323.40/1,839,734.70 = 959,384.20/x
  3. Step 3: Cross multiply
    1,225,323.40x = 1,839,734.70 × 959,384.20
  4. Step 4: Simplify right side
    1,225,323.40x = 1,765,012,403,371.74
  5. Step 5: Solve for x
    x = 1,765,012,403,371.74/1,225,323.40
  6. Step 6: Final answer
    x = 1,440,446.17

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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.