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Finding the Fourth Proportional to 253,633.71, 350,014.64 and 138,919.58

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Solution

The fourth proportional to 253,633.71, 350,014.64 and 138,919.58 is: 191,709.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,633.71 : 350,014.64 = 138,919.58 : x
  2. Step 2: Convert to fraction form
    253,633.71/350,014.64 = 138,919.58/x
  3. Step 3: Cross multiply
    253,633.71x = 350,014.64 × 138,919.58
  4. Step 4: Simplify right side
    253,633.71x = 48,623,886,782.65
  5. Step 5: Solve for x
    x = 48,623,886,782.65/253,633.71
  6. Step 6: Final answer
    x = 191,709.09

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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.