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Finding the Fourth Proportional to 685,158.16, 945,494.13 and 379,235.14

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Solution

The fourth proportional to 685,158.16, 945,494.13 and 379,235.14 is: 523,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,158.16 : 945,494.13 = 379,235.14 : x
  2. Step 2: Convert to fraction form
    685,158.16/945,494.13 = 379,235.14/x
  3. Step 3: Cross multiply
    685,158.16x = 945,494.13 × 379,235.14
  4. Step 4: Simplify right side
    685,158.16x = 358,564,598,759.73
  5. Step 5: Solve for x
    x = 358,564,598,759.73/685,158.16
  6. Step 6: Final answer
    x = 523,331.14

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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.