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Finding the Fourth Proportional to 251,758.59, 377,637.90 and 85,546.59

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Solution

The fourth proportional to 251,758.59, 377,637.90 and 85,546.59 is: 128,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,758.59 : 377,637.90 = 85,546.59 : x
  2. Step 2: Convert to fraction form
    251,758.59/377,637.90 = 85,546.59/x
  3. Step 3: Cross multiply
    251,758.59x = 377,637.90 × 85,546.59
  4. Step 4: Simplify right side
    251,758.59x = 32,305,634,599.76
  5. Step 5: Solve for x
    x = 32,305,634,599.76/251,758.59
  6. Step 6: Final answer
    x = 128,319.89

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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.