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Finding the Fourth Proportional to 186,119.40, 256,890.40 and 105,594.06

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Solution

The fourth proportional to 186,119.40, 256,890.40 and 105,594.06 is: 145,745.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,119.40 : 256,890.40 = 105,594.06 : x
  2. Step 2: Convert to fraction form
    186,119.40/256,890.40 = 105,594.06/x
  3. Step 3: Cross multiply
    186,119.40x = 256,890.40 × 105,594.06
  4. Step 4: Simplify right side
    186,119.40x = 27,126,100,311.02
  5. Step 5: Solve for x
    x = 27,126,100,311.02/186,119.40
  6. Step 6: Final answer
    x = 145,745.69

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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.