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Finding the Fourth Proportional to 637,939.88, 880,346.70 and 347,554.91

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Solution

The fourth proportional to 637,939.88, 880,346.70 and 347,554.91 is: 479,620.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,939.88 : 880,346.70 = 347,554.91 : x
  2. Step 2: Convert to fraction form
    637,939.88/880,346.70 = 347,554.91/x
  3. Step 3: Cross multiply
    637,939.88x = 880,346.70 × 347,554.91
  4. Step 4: Simplify right side
    637,939.88x = 305,968,813,685.56
  5. Step 5: Solve for x
    x = 305,968,813,685.56/637,939.88
  6. Step 6: Final answer
    x = 479,620.14

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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.