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Finding the Fourth Proportional to 11,925.95, 17,888.92 and 4,905.68

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Solution

The fourth proportional to 11,925.95, 17,888.92 and 4,905.68 is: 7,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.95 : 17,888.92 = 4,905.68 : x
  2. Step 2: Convert to fraction form
    11,925.95/17,888.92 = 4,905.68/x
  3. Step 3: Cross multiply
    11,925.95x = 17,888.92 × 4,905.68
  4. Step 4: Simplify right side
    11,925.95x = 87,757,215.36
  5. Step 5: Solve for x
    x = 87,757,215.36/11,925.95
  6. Step 6: Final answer
    x = 7,358.51

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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.