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Finding the Fourth Proportional to 19,461.60, 26,794.80 and 16,351.20

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Solution

The fourth proportional to 19,461.60, 26,794.80 and 16,351.20 is: 22,512.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,461.60 : 26,794.80 = 16,351.20 : x
  2. Step 2: Convert to fraction form
    19,461.60/26,794.80 = 16,351.20/x
  3. Step 3: Cross multiply
    19,461.60x = 26,794.80 × 16,351.20
  4. Step 4: Simplify right side
    19,461.60x = 438,127,133.76
  5. Step 5: Solve for x
    x = 438,127,133.76/19,461.60
  6. Step 6: Final answer
    x = 22,512.39

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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.