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Finding the Fourth Proportional to 213,268.92, 319,972.47 and 63,510.45

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Solution

The fourth proportional to 213,268.92, 319,972.47 and 63,510.45 is: 95,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,268.92 : 319,972.47 = 63,510.45 : x
  2. Step 2: Convert to fraction form
    213,268.92/319,972.47 = 63,510.45/x
  3. Step 3: Cross multiply
    213,268.92x = 319,972.47 × 63,510.45
  4. Step 4: Simplify right side
    213,268.92x = 20,321,595,557.31
  5. Step 5: Solve for x
    x = 20,321,595,557.31/213,268.92
  6. Step 6: Final answer
    x = 95,286.25

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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.