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Finding the Fourth Proportional to 561,939.06, 776,114.61 and 377,857.38

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Solution

The fourth proportional to 561,939.06, 776,114.61 and 377,857.38 is: 521,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,939.06 : 776,114.61 = 377,857.38 : x
  2. Step 2: Convert to fraction form
    561,939.06/776,114.61 = 377,857.38/x
  3. Step 3: Cross multiply
    561,939.06x = 776,114.61 × 377,857.38
  4. Step 4: Simplify right side
    561,939.06x = 293,260,633,114.32
  5. Step 5: Solve for x
    x = 293,260,633,114.32/561,939.06
  6. Step 6: Final answer
    x = 521,872.66

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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.