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Finding the Fourth Proportional to 630,889.67, 870,626.90 and 404,534.63

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Solution

The fourth proportional to 630,889.67, 870,626.90 and 404,534.63 is: 558,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,889.67 : 870,626.90 = 404,534.63 : x
  2. Step 2: Convert to fraction form
    630,889.67/870,626.90 = 404,534.63/x
  3. Step 3: Cross multiply
    630,889.67x = 870,626.90 × 404,534.63
  4. Step 4: Simplify right side
    630,889.67x = 352,198,727,517.75
  5. Step 5: Solve for x
    x = 352,198,727,517.75/630,889.67
  6. Step 6: Final answer
    x = 558,257.25

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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.