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Finding the Fourth Proportional to 618,997.32, 853,901.88 and 404,263.08

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Solution

The fourth proportional to 618,997.32, 853,901.88 and 404,263.08 is: 557,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,997.32 : 853,901.88 = 404,263.08 : x
  2. Step 2: Convert to fraction form
    618,997.32/853,901.88 = 404,263.08/x
  3. Step 3: Cross multiply
    618,997.32x = 853,901.88 × 404,263.08
  4. Step 4: Simplify right side
    618,997.32x = 345,201,004,026.59
  5. Step 5: Solve for x
    x = 345,201,004,026.59/618,997.32
  6. Step 6: Final answer
    x = 557,677.70

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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.