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Finding the Fourth Proportional to 1,074,948.04, 1,612,368.72 and 400,976.80

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Solution

The fourth proportional to 1,074,948.04, 1,612,368.72 and 400,976.80 is: 601,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,948.04 : 1,612,368.72 = 400,976.80 : x
  2. Step 2: Convert to fraction form
    1,074,948.04/1,612,368.72 = 400,976.80/x
  3. Step 3: Cross multiply
    1,074,948.04x = 1,612,368.72 × 400,976.80
  4. Step 4: Simplify right side
    1,074,948.04x = 646,522,449,765.70
  5. Step 5: Solve for x
    x = 646,522,449,765.70/1,074,948.04
  6. Step 6: Final answer
    x = 601,445.30

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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.