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Finding the Fourth Proportional to 9,991.92, 14,984.56 and 4,726.16

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Solution

The fourth proportional to 9,991.92, 14,984.56 and 4,726.16 is: 7,087.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.92 : 14,984.56 = 4,726.16 : x
  2. Step 2: Convert to fraction form
    9,991.92/14,984.56 = 4,726.16/x
  3. Step 3: Cross multiply
    9,991.92x = 14,984.56 × 4,726.16
  4. Step 4: Simplify right side
    9,991.92x = 70,819,428.09
  5. Step 5: Solve for x
    x = 70,819,428.09/9,991.92
  6. Step 6: Final answer
    x = 7,087.67

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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.