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Finding the Fourth Proportional to 1,384.04, 1,910.01 and 754.61

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Solution

The fourth proportional to 1,384.04, 1,910.01 and 754.61 is: 1,041.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.04 : 1,910.01 = 754.61 : x
  2. Step 2: Convert to fraction form
    1,384.04/1,910.01 = 754.61/x
  3. Step 3: Cross multiply
    1,384.04x = 1,910.01 × 754.61
  4. Step 4: Simplify right side
    1,384.04x = 1,441,303.10
  5. Step 5: Solve for x
    x = 1,441,303.10/1,384.04
  6. Step 6: Final answer
    x = 1,041.38

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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.