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Finding the Fourth Proportional to 381,573.72, 526,573.76 and 238,416.76

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Solution

The fourth proportional to 381,573.72, 526,573.76 and 238,416.76 is: 329,016.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,573.72 : 526,573.76 = 238,416.76 : x
  2. Step 2: Convert to fraction form
    381,573.72/526,573.76 = 238,416.76/x
  3. Step 3: Cross multiply
    381,573.72x = 526,573.76 × 238,416.76
  4. Step 4: Simplify right side
    381,573.72x = 125,544,009,760.22
  5. Step 5: Solve for x
    x = 125,544,009,760.22/381,573.72
  6. Step 6: Final answer
    x = 329,016.39

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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.