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Finding the Fourth Proportional to 238,408.65, 357,390.63 and 80,526.69

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Solution

The fourth proportional to 238,408.65, 357,390.63 and 80,526.69 is: 120,714.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,408.65 : 357,390.63 = 80,526.69 : x
  2. Step 2: Convert to fraction form
    238,408.65/357,390.63 = 80,526.69/x
  3. Step 3: Cross multiply
    238,408.65x = 357,390.63 × 80,526.69
  4. Step 4: Simplify right side
    238,408.65x = 28,779,484,470.91
  5. Step 5: Solve for x
    x = 28,779,484,470.91/238,408.65
  6. Step 6: Final answer
    x = 120,714.93

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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.