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Finding the Fourth Proportional to 92,381.74, 127,486.90 and 49,940.28

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Solution

The fourth proportional to 92,381.74, 127,486.90 and 49,940.28 is: 68,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,381.74 : 127,486.90 = 49,940.28 : x
  2. Step 2: Convert to fraction form
    92,381.74/127,486.90 = 49,940.28/x
  3. Step 3: Cross multiply
    92,381.74x = 127,486.90 × 49,940.28
  4. Step 4: Simplify right side
    92,381.74x = 6,366,731,482.33
  5. Step 5: Solve for x
    x = 6,366,731,482.33/92,381.74
  6. Step 6: Final answer
    x = 68,917.64

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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.