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Finding the Fourth Proportional to 8,469.92, 12,701.64 and 5,003.12

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Solution

The fourth proportional to 8,469.92, 12,701.64 and 5,003.12 is: 7,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.92 : 12,701.64 = 5,003.12 : x
  2. Step 2: Convert to fraction form
    8,469.92/12,701.64 = 5,003.12/x
  3. Step 3: Cross multiply
    8,469.92x = 12,701.64 × 5,003.12
  4. Step 4: Simplify right side
    8,469.92x = 63,547,829.12
  5. Step 5: Solve for x
    x = 63,547,829.12/8,469.92
  6. Step 6: Final answer
    x = 7,502.77

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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.