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Finding the Fourth Proportional to 402,203.19, 555,078.94 and 230,086.97

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Solution

The fourth proportional to 402,203.19, 555,078.94 and 230,086.97 is: 317,542.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,203.19 : 555,078.94 = 230,086.97 : x
  2. Step 2: Convert to fraction form
    402,203.19/555,078.94 = 230,086.97/x
  3. Step 3: Cross multiply
    402,203.19x = 555,078.94 × 230,086.97
  4. Step 4: Simplify right side
    402,203.19x = 127,716,427,489.58
  5. Step 5: Solve for x
    x = 127,716,427,489.58/402,203.19
  6. Step 6: Final answer
    x = 317,542.06

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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.