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Finding the Fourth Proportional to 391,089.12, 586,913.46 and 166,606.80

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Solution

The fourth proportional to 391,089.12, 586,913.46 and 166,606.80 is: 250,029.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,089.12 : 586,913.46 = 166,606.80 : x
  2. Step 2: Convert to fraction form
    391,089.12/586,913.46 = 166,606.80/x
  3. Step 3: Cross multiply
    391,089.12x = 586,913.46 × 166,606.80
  4. Step 4: Simplify right side
    391,089.12x = 97,783,773,447.53
  5. Step 5: Solve for x
    x = 97,783,773,447.53/391,089.12
  6. Step 6: Final answer
    x = 250,029.39

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1.5x scale

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.