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Finding the Fourth Proportional to 255,298.17, 352,308.59 and 140,574.43

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Solution

The fourth proportional to 255,298.17, 352,308.59 and 140,574.43 is: 193,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,298.17 : 352,308.59 = 140,574.43 : x
  2. Step 2: Convert to fraction form
    255,298.17/352,308.59 = 140,574.43/x
  3. Step 3: Cross multiply
    255,298.17x = 352,308.59 × 140,574.43
  4. Step 4: Simplify right side
    255,298.17x = 49,525,579,488.02
  5. Step 5: Solve for x
    x = 49,525,579,488.02/255,298.17
  6. Step 6: Final answer
    x = 193,991.12

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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.