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Finding the Fourth Proportional to 90,705.84, 136,008.84 and 33,750.96

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Solution

The fourth proportional to 90,705.84, 136,008.84 and 33,750.96 is: 50,607.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,705.84 : 136,008.84 = 33,750.96 : x
  2. Step 2: Convert to fraction form
    90,705.84/136,008.84 = 33,750.96/x
  3. Step 3: Cross multiply
    90,705.84x = 136,008.84 × 33,750.96
  4. Step 4: Simplify right side
    90,705.84x = 4,590,428,918.49
  5. Step 5: Solve for x
    x = 4,590,428,918.49/90,705.84
  6. Step 6: Final answer
    x = 50,607.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.