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Finding the Fourth Proportional to 18,695,505.60, 28,043,258.40 and 17,561,764.80

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Solution

The fourth proportional to 18,695,505.60, 28,043,258.40 and 17,561,764.80 is: 26,342,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695,505.60 : 28,043,258.40 = 17,561,764.80 : x
  2. Step 2: Convert to fraction form
    18,695,505.60/28,043,258.40 = 17,561,764.80/x
  3. Step 3: Cross multiply
    18,695,505.60x = 28,043,258.40 × 17,561,764.80
  4. Step 4: Simplify right side
    18,695,505.60x = 492,489,108,246,424.31
  5. Step 5: Solve for x
    x = 492,489,108,246,424.31/18,695,505.60
  6. Step 6: Final answer
    x = 26,342,647.20

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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.