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Finding the Fourth Proportional to 10,858.68, 14,984.64 and 5,890.68

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Solution

The fourth proportional to 10,858.68, 14,984.64 and 5,890.68 is: 8,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.68 : 14,984.64 = 5,890.68 : x
  2. Step 2: Convert to fraction form
    10,858.68/14,984.64 = 5,890.68/x
  3. Step 3: Cross multiply
    10,858.68x = 14,984.64 × 5,890.68
  4. Step 4: Simplify right side
    10,858.68x = 88,269,719.16
  5. Step 5: Solve for x
    x = 88,269,719.16/10,858.68
  6. Step 6: Final answer
    x = 8,128.95

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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.