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Finding the Fourth Proportional to 25,187.56, 37,783.90 and 9,618.28

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Solution

The fourth proportional to 25,187.56, 37,783.90 and 9,618.28 is: 14,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,187.56 : 37,783.90 = 9,618.28 : x
  2. Step 2: Convert to fraction form
    25,187.56/37,783.90 = 9,618.28/x
  3. Step 3: Cross multiply
    25,187.56x = 37,783.90 × 9,618.28
  4. Step 4: Simplify right side
    25,187.56x = 363,416,129.69
  5. Step 5: Solve for x
    x = 363,416,129.69/25,187.56
  6. Step 6: Final answer
    x = 14,428.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.