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Finding the Fourth Proportional to 10,876.35, 15,009.35 and 6,161.54

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Solution

The fourth proportional to 10,876.35, 15,009.35 and 6,161.54 is: 8,502.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.35 : 15,009.35 = 6,161.54 : x
  2. Step 2: Convert to fraction form
    10,876.35/15,009.35 = 6,161.54/x
  3. Step 3: Cross multiply
    10,876.35x = 15,009.35 × 6,161.54
  4. Step 4: Simplify right side
    10,876.35x = 92,480,710.40
  5. Step 5: Solve for x
    x = 92,480,710.40/10,876.35
  6. Step 6: Final answer
    x = 8,502.92

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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.