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Finding the Fourth Proportional to 186,779.10, 280,205.10 and 74,440.20

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Solution

The fourth proportional to 186,779.10, 280,205.10 and 74,440.20 is: 111,674.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,779.10 : 280,205.10 = 74,440.20 : x
  2. Step 2: Convert to fraction form
    186,779.10/280,205.10 = 74,440.20/x
  3. Step 3: Cross multiply
    186,779.10x = 280,205.10 × 74,440.20
  4. Step 4: Simplify right side
    186,779.10x = 20,858,523,685.02
  5. Step 5: Solve for x
    x = 20,858,523,685.02/186,779.10
  6. Step 6: Final answer
    x = 111,674.83

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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.