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Finding the Fourth Proportional to 18,706.60, 25,762.62 and 18,298.36

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Solution

The fourth proportional to 18,706.60, 25,762.62 and 18,298.36 is: 25,200.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.60 : 25,762.62 = 18,298.36 : x
  2. Step 2: Convert to fraction form
    18,706.60/25,762.62 = 18,298.36/x
  3. Step 3: Cross multiply
    18,706.60x = 25,762.62 × 18,298.36
  4. Step 4: Simplify right side
    18,706.60x = 471,413,695.30
  5. Step 5: Solve for x
    x = 471,413,695.30/18,706.60
  6. Step 6: Final answer
    x = 25,200.39

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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.