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Finding the Fourth Proportional to 1,890,133.02, 2,608,288.80 and 1,074,228.90

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Solution

The fourth proportional to 1,890,133.02, 2,608,288.80 and 1,074,228.90 is: 1,482,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890,133.02 : 2,608,288.80 = 1,074,228.90 : x
  2. Step 2: Convert to fraction form
    1,890,133.02/2,608,288.80 = 1,074,228.90/x
  3. Step 3: Cross multiply
    1,890,133.02x = 2,608,288.80 × 1,074,228.90
  4. Step 4: Simplify right side
    1,890,133.02x = 2,801,899,208,506.32
  5. Step 5: Solve for x
    x = 2,801,899,208,506.32/1,890,133.02
  6. Step 6: Final answer
    x = 1,482,382.02

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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.