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Finding the Fourth Proportional to 293,347.40, 440,555.70 and 256,605.80

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Solution

The fourth proportional to 293,347.40, 440,555.70 and 256,605.80 is: 385,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,347.40 : 440,555.70 = 256,605.80 : x
  2. Step 2: Convert to fraction form
    293,347.40/440,555.70 = 256,605.80/x
  3. Step 3: Cross multiply
    293,347.40x = 440,555.70 × 256,605.80
  4. Step 4: Simplify right side
    293,347.40x = 113,049,147,843.06
  5. Step 5: Solve for x
    x = 113,049,147,843.06/293,347.40
  6. Step 6: Final answer
    x = 385,376.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.