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Finding the Fourth Proportional to 8,484.21, 11,707.94 and 4,899.15

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Solution

The fourth proportional to 8,484.21, 11,707.94 and 4,899.15 is: 6,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.21 : 11,707.94 = 4,899.15 : x
  2. Step 2: Convert to fraction form
    8,484.21/11,707.94 = 4,899.15/x
  3. Step 3: Cross multiply
    8,484.21x = 11,707.94 × 4,899.15
  4. Step 4: Simplify right side
    8,484.21x = 57,358,966.50
  5. Step 5: Solve for x
    x = 57,358,966.50/8,484.21
  6. Step 6: Final answer
    x = 6,760.67

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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.