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Finding the Fourth Proportional to 626,561.43, 864,655.76 and 340,081.63

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Solution

The fourth proportional to 626,561.43, 864,655.76 and 340,081.63 is: 469,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,561.43 : 864,655.76 = 340,081.63 : x
  2. Step 2: Convert to fraction form
    626,561.43/864,655.76 = 340,081.63/x
  3. Step 3: Cross multiply
    626,561.43x = 864,655.76 × 340,081.63
  4. Step 4: Simplify right side
    626,561.43x = 294,053,540,249.69
  5. Step 5: Solve for x
    x = 294,053,540,249.69/626,561.43
  6. Step 6: Final answer
    x = 469,313.18

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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.