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Finding the Fourth Proportional to 18,597.70, 25,664.45 and 10,530.20

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Solution

The fourth proportional to 18,597.70, 25,664.45 and 10,530.20 is: 14,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.70 : 25,664.45 = 10,530.20 : x
  2. Step 2: Convert to fraction form
    18,597.70/25,664.45 = 10,530.20/x
  3. Step 3: Cross multiply
    18,597.70x = 25,664.45 × 10,530.20
  4. Step 4: Simplify right side
    18,597.70x = 270,251,802.90
  5. Step 5: Solve for x
    x = 270,251,802.90/18,597.70
  6. Step 6: Final answer
    x = 14,531.46

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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.