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Finding the Fourth Proportional to 658,679.36, 908,699.11 and 440,958.16

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Solution

The fourth proportional to 658,679.36, 908,699.11 and 440,958.16 is: 608,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,679.36 : 908,699.11 = 440,958.16 : x
  2. Step 2: Convert to fraction form
    658,679.36/908,699.11 = 440,958.16/x
  3. Step 3: Cross multiply
    658,679.36x = 908,699.11 × 440,958.16
  4. Step 4: Simplify right side
    658,679.36x = 400,698,284,165.09
  5. Step 5: Solve for x
    x = 400,698,284,165.09/658,679.36
  6. Step 6: Final answer
    x = 608,335.87

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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.