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Finding the Fourth Proportional to 674,624.97, 930,980.89 and 384,236.48

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Solution

The fourth proportional to 674,624.97, 930,980.89 and 384,236.48 is: 530,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,624.97 : 930,980.89 = 384,236.48 : x
  2. Step 2: Convert to fraction form
    674,624.97/930,980.89 = 384,236.48/x
  3. Step 3: Cross multiply
    674,624.97x = 930,980.89 × 384,236.48
  4. Step 4: Simplify right side
    674,624.97x = 357,716,817,691.85
  5. Step 5: Solve for x
    x = 357,716,817,691.85/674,624.97
  6. Step 6: Final answer
    x = 530,245.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.