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Finding the Fourth Proportional to 619,009.38, 853,918.55 and 404,275.14

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Solution

The fourth proportional to 619,009.38, 853,918.55 and 404,275.14 is: 557,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,009.38 : 853,918.55 = 404,275.14 : x
  2. Step 2: Convert to fraction form
    619,009.38/853,918.55 = 404,275.14/x
  3. Step 3: Cross multiply
    619,009.38x = 853,918.55 × 404,275.14
  4. Step 4: Simplify right side
    619,009.38x = 345,218,041,349.85
  5. Step 5: Solve for x
    x = 345,218,041,349.85/619,009.38
  6. Step 6: Final answer
    x = 557,694.36

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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.