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Finding the Fourth Proportional to 10,876.54, 15,009.10 and 6,160.86

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Solution

The fourth proportional to 10,876.54, 15,009.10 and 6,160.86 is: 8,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.54 : 15,009.10 = 6,160.86 : x
  2. Step 2: Convert to fraction form
    10,876.54/15,009.10 = 6,160.86/x
  3. Step 3: Cross multiply
    10,876.54x = 15,009.10 × 6,160.86
  4. Step 4: Simplify right side
    10,876.54x = 92,468,963.83
  5. Step 5: Solve for x
    x = 92,468,963.83/10,876.54
  6. Step 6: Final answer
    x = 8,501.69

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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.