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Finding the Fourth Proportional to 493,878.56, 740,740.62 and 156,874.86

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Solution

The fourth proportional to 493,878.56, 740,740.62 and 156,874.86 is: 235,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,878.56 : 740,740.62 = 156,874.86 : x
  2. Step 2: Convert to fraction form
    493,878.56/740,740.62 = 156,874.86/x
  3. Step 3: Cross multiply
    493,878.56x = 740,740.62 × 156,874.86
  4. Step 4: Simplify right side
    493,878.56x = 116,203,581,058.81
  5. Step 5: Solve for x
    x = 116,203,581,058.81/493,878.56
  6. Step 6: Final answer
    x = 235,287.76

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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.