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Finding the Fourth Proportional to 404,368.40, 606,552.60 and 396,495.20

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Solution

The fourth proportional to 404,368.40, 606,552.60 and 396,495.20 is: 594,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,368.40 : 606,552.60 = 396,495.20 : x
  2. Step 2: Convert to fraction form
    404,368.40/606,552.60 = 396,495.20/x
  3. Step 3: Cross multiply
    404,368.40x = 606,552.60 × 396,495.20
  4. Step 4: Simplify right side
    404,368.40x = 240,495,194,447.52
  5. Step 5: Solve for x
    x = 240,495,194,447.52/404,368.40
  6. Step 6: Final answer
    x = 594,742.80

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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.