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Finding the Fourth Proportional to 619,326.60, 929,016.90 and 170,035.80

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Solution

The fourth proportional to 619,326.60, 929,016.90 and 170,035.80 is: 255,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,326.60 : 929,016.90 = 170,035.80 : x
  2. Step 2: Convert to fraction form
    619,326.60/929,016.90 = 170,035.80/x
  3. Step 3: Cross multiply
    619,326.60x = 929,016.90 × 170,035.80
  4. Step 4: Simplify right side
    619,326.60x = 157,966,131,805.02
  5. Step 5: Solve for x
    x = 157,966,131,805.02/619,326.60
  6. Step 6: Final answer
    x = 255,061.11

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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.