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Finding the Fourth Proportional to 391,444.65, 587,221.65 and 166,803.30

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Solution

The fourth proportional to 391,444.65, 587,221.65 and 166,803.30 is: 250,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,444.65 : 587,221.65 = 166,803.30 : x
  2. Step 2: Convert to fraction form
    391,444.65/587,221.65 = 166,803.30/x
  3. Step 3: Cross multiply
    391,444.65x = 587,221.65 × 166,803.30
  4. Step 4: Simplify right side
    391,444.65x = 97,950,509,051.45
  5. Step 5: Solve for x
    x = 97,950,509,051.45/391,444.65
  6. Step 6: Final answer
    x = 250,228.25

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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.