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Finding the Fourth Proportional to 630,599.72, 870,227.64 and 404,245.28

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Solution

The fourth proportional to 630,599.72, 870,227.64 and 404,245.28 is: 557,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,599.72 : 870,227.64 = 404,245.28 : x
  2. Step 2: Convert to fraction form
    630,599.72/870,227.64 = 404,245.28/x
  3. Step 3: Cross multiply
    630,599.72x = 870,227.64 × 404,245.28
  4. Step 4: Simplify right side
    630,599.72x = 351,785,415,995.54
  5. Step 5: Solve for x
    x = 351,785,415,995.54/630,599.72
  6. Step 6: Final answer
    x = 557,858.50

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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.