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Finding the Fourth Proportional to 190,503.68, 262,893.84 and 105,620.72

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Solution

The fourth proportional to 190,503.68, 262,893.84 and 105,620.72 is: 145,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,503.68 : 262,893.84 = 105,620.72 : x
  2. Step 2: Convert to fraction form
    190,503.68/262,893.84 = 105,620.72/x
  3. Step 3: Cross multiply
    190,503.68x = 262,893.84 × 105,620.72
  4. Step 4: Simplify right side
    190,503.68x = 27,767,036,664.36
  5. Step 5: Solve for x
    x = 27,767,036,664.36/190,503.68
  6. Step 6: Final answer
    x = 145,755.91

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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.