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Finding the Fourth Proportional to 235,536.72, 325,005.84 and 138,683.04

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Solution

The fourth proportional to 235,536.72, 325,005.84 and 138,683.04 is: 191,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,536.72 : 325,005.84 = 138,683.04 : x
  2. Step 2: Convert to fraction form
    235,536.72/325,005.84 = 138,683.04/x
  3. Step 3: Cross multiply
    235,536.72x = 325,005.84 × 138,683.04
  4. Step 4: Simplify right side
    235,536.72x = 45,072,797,908.95
  5. Step 5: Solve for x
    x = 45,072,797,908.95/235,536.72
  6. Step 6: Final answer
    x = 191,362.09

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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.