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Finding the Fourth Proportional to 15,656.99, 21,614.96 and 10,647.95

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Solution

The fourth proportional to 15,656.99, 21,614.96 and 10,647.95 is: 14,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.99 : 21,614.96 = 10,647.95 : x
  2. Step 2: Convert to fraction form
    15,656.99/21,614.96 = 10,647.95/x
  3. Step 3: Cross multiply
    15,656.99x = 21,614.96 × 10,647.95
  4. Step 4: Simplify right side
    15,656.99x = 230,155,013.33
  5. Step 5: Solve for x
    x = 230,155,013.33/15,656.99
  6. Step 6: Final answer
    x = 14,699.83

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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.