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Finding the Fourth Proportional to 18,308.76, 25,267.50 and 10,351.14

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Solution

The fourth proportional to 18,308.76, 25,267.50 and 10,351.14 is: 14,285.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.76 : 25,267.50 = 10,351.14 : x
  2. Step 2: Convert to fraction form
    18,308.76/25,267.50 = 10,351.14/x
  3. Step 3: Cross multiply
    18,308.76x = 25,267.50 × 10,351.14
  4. Step 4: Simplify right side
    18,308.76x = 261,547,429.95
  5. Step 5: Solve for x
    x = 261,547,429.95/18,308.76
  6. Step 6: Final answer
    x = 14,285.37

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Half scale
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Double scale
Find fourth proportional to 18,309.76, 25,268.88 and 10,352.14
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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.