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Finding the Fourth Proportional to 18,231.70, 25,159.74 and 9,848.20

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Solution

The fourth proportional to 18,231.70, 25,159.74 and 9,848.20 is: 13,590.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.70 : 25,159.74 = 9,848.20 : x
  2. Step 2: Convert to fraction form
    18,231.70/25,159.74 = 9,848.20/x
  3. Step 3: Cross multiply
    18,231.70x = 25,159.74 × 9,848.20
  4. Step 4: Simplify right side
    18,231.70x = 247,778,151.47
  5. Step 5: Solve for x
    x = 247,778,151.47/18,231.70
  6. Step 6: Final answer
    x = 13,590.51

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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.