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Finding the Fourth Proportional to 316,595.82, 474,918.39 and 91,959.90

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Solution

The fourth proportional to 316,595.82, 474,918.39 and 91,959.90 is: 137,947.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,595.82 : 474,918.39 = 91,959.90 : x
  2. Step 2: Convert to fraction form
    316,595.82/474,918.39 = 91,959.90/x
  3. Step 3: Cross multiply
    316,595.82x = 474,918.39 × 91,959.90
  4. Step 4: Simplify right side
    316,595.82x = 43,673,447,652.56
  5. Step 5: Solve for x
    x = 43,673,447,652.56/316,595.82
  6. Step 6: Final answer
    x = 137,947.01

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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.