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Finding the Fourth Proportional to 357,422.72, 535,317.44 and 170,565.44

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Solution

The fourth proportional to 357,422.72, 535,317.44 and 170,565.44 is: 255,458.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,422.72 : 535,317.44 = 170,565.44 : x
  2. Step 2: Convert to fraction form
    357,422.72/535,317.44 = 170,565.44/x
  3. Step 3: Cross multiply
    357,422.72x = 535,317.44 × 170,565.44
  4. Step 4: Simplify right side
    357,422.72x = 91,306,654,693.27
  5. Step 5: Solve for x
    x = 91,306,654,693.27/357,422.72
  6. Step 6: Final answer
    x = 255,458.45

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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.