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Finding the Fourth Proportional to 280,234.89, 386,732.69 and 159,393.59

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Solution

The fourth proportional to 280,234.89, 386,732.69 and 159,393.59 is: 219,968.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,234.89 : 386,732.69 = 159,393.59 : x
  2. Step 2: Convert to fraction form
    280,234.89/386,732.69 = 159,393.59/x
  3. Step 3: Cross multiply
    280,234.89x = 386,732.69 × 159,393.59
  4. Step 4: Simplify right side
    280,234.89x = 61,642,712,043.39
  5. Step 5: Solve for x
    x = 61,642,712,043.39/280,234.89
  6. Step 6: Final answer
    x = 219,968.01

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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.