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Finding the Fourth Proportional to 190,612.63, 263,045.69 and 105,729.69

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Solution

The fourth proportional to 190,612.63, 263,045.69 and 105,729.69 is: 145,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,612.63 : 263,045.69 = 105,729.69 : x
  2. Step 2: Convert to fraction form
    190,612.63/263,045.69 = 105,729.69/x
  3. Step 3: Cross multiply
    190,612.63x = 263,045.69 × 105,729.69
  4. Step 4: Simplify right side
    190,612.63x = 27,811,739,259.54
  5. Step 5: Solve for x
    x = 27,811,739,259.54/190,612.63
  6. Step 6: Final answer
    x = 145,907.12

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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.