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Finding the Fourth Proportional to 110,536.40, 165,869.40 and 40,422.80

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Solution

The fourth proportional to 110,536.40, 165,869.40 and 40,422.80 is: 60,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,536.40 : 165,869.40 = 40,422.80 : x
  2. Step 2: Convert to fraction form
    110,536.40/165,869.40 = 40,422.80/x
  3. Step 3: Cross multiply
    110,536.40x = 165,869.40 × 40,422.80
  4. Step 4: Simplify right side
    110,536.40x = 6,704,905,582.32
  5. Step 5: Solve for x
    x = 6,704,905,582.32/110,536.40
  6. Step 6: Final answer
    x = 60,657.90

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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.