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Finding the Fourth Proportional to 10,858.76, 14,985.79 and 6,079.15

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Solution

The fourth proportional to 10,858.76, 14,985.79 and 6,079.15 is: 8,389.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.76 : 14,985.79 = 6,079.15 : x
  2. Step 2: Convert to fraction form
    10,858.76/14,985.79 = 6,079.15/x
  3. Step 3: Cross multiply
    10,858.76x = 14,985.79 × 6,079.15
  4. Step 4: Simplify right side
    10,858.76x = 91,100,790.35
  5. Step 5: Solve for x
    x = 91,100,790.35/10,858.76
  6. Step 6: Final answer
    x = 8,389.62

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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.