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Finding the Fourth Proportional to 404,319.60, 557,954.12 and 223,048.89

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Solution

The fourth proportional to 404,319.60, 557,954.12 and 223,048.89 is: 307,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,319.60 : 557,954.12 = 223,048.89 : x
  2. Step 2: Convert to fraction form
    404,319.60/557,954.12 = 223,048.89/x
  3. Step 3: Cross multiply
    404,319.60x = 557,954.12 × 223,048.89
  4. Step 4: Simplify right side
    404,319.60x = 124,451,047,694.55
  5. Step 5: Solve for x
    x = 124,451,047,694.55/404,319.60
  6. Step 6: Final answer
    x = 307,803.65

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1.5x scale

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.