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Finding the Fourth Proportional to 185,779.28, 278,764.28 and 91,007.72

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Solution

The fourth proportional to 185,779.28, 278,764.28 and 91,007.72 is: 136,558.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,779.28 : 278,764.28 = 91,007.72 : x
  2. Step 2: Convert to fraction form
    185,779.28/278,764.28 = 91,007.72/x
  3. Step 3: Cross multiply
    185,779.28x = 278,764.28 × 91,007.72
  4. Step 4: Simplify right side
    185,779.28x = 25,369,701,540.24
  5. Step 5: Solve for x
    x = 25,369,701,540.24/185,779.28
  6. Step 6: Final answer
    x = 136,558.29

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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.