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Finding the Fourth Proportional to 627,293.11, 940,958.12 and 153,978.47

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Solution

The fourth proportional to 627,293.11, 940,958.12 and 153,978.47 is: 230,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,293.11 : 940,958.12 = 153,978.47 : x
  2. Step 2: Convert to fraction form
    627,293.11/940,958.12 = 153,978.47/x
  3. Step 3: Cross multiply
    627,293.11x = 940,958.12 × 153,978.47
  4. Step 4: Simplify right side
    627,293.11x = 144,887,289,994.30
  5. Step 5: Solve for x
    x = 144,887,289,994.30/627,293.11
  6. Step 6: Final answer
    x = 230,972.23

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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.