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Finding the Fourth Proportional to 619,873.86, 929,701.90 and 170,486.37

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Solution

The fourth proportional to 619,873.86, 929,701.90 and 170,486.37 is: 255,699.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,873.86 : 929,701.90 = 170,486.37 : x
  2. Step 2: Convert to fraction form
    619,873.86/929,701.90 = 170,486.37/x
  3. Step 3: Cross multiply
    619,873.86x = 929,701.90 × 170,486.37
  4. Step 4: Simplify right side
    619,873.86x = 158,501,502,326.21
  5. Step 5: Solve for x
    x = 158,501,502,326.21/619,873.86
  6. Step 6: Final answer
    x = 255,699.61

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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.