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Finding the Fourth Proportional to 10,858.62, 14,985.62 and 6,078.99

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Solution

The fourth proportional to 10,858.62, 14,985.62 and 6,078.99 is: 8,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.62 : 14,985.62 = 6,078.99 : x
  2. Step 2: Convert to fraction form
    10,858.62/14,985.62 = 6,078.99/x
  3. Step 3: Cross multiply
    10,858.62x = 14,985.62 × 6,078.99
  4. Step 4: Simplify right side
    10,858.62x = 91,097,434.12
  5. Step 5: Solve for x
    x = 91,097,434.12/10,858.62
  6. Step 6: Final answer
    x = 8,389.41

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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.