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Finding the Fourth Proportional to 381,530.55, 526,514.21 and 238,373.63

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Solution

The fourth proportional to 381,530.55, 526,514.21 and 238,373.63 is: 328,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,530.55 : 526,514.21 = 238,373.63 : x
  2. Step 2: Convert to fraction form
    381,530.55/526,514.21 = 238,373.63/x
  3. Step 3: Cross multiply
    381,530.55x = 526,514.21 × 238,373.63
  4. Step 4: Simplify right side
    381,530.55x = 125,507,103,484.28
  5. Step 5: Solve for x
    x = 125,507,103,484.28/381,530.55
  6. Step 6: Final answer
    x = 328,956.89

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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.