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Finding the Fourth Proportional to 12,459.99, 17,193.99 and 7,151.07

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Solution

The fourth proportional to 12,459.99, 17,193.99 and 7,151.07 is: 9,868.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.99 : 17,193.99 = 7,151.07 : x
  2. Step 2: Convert to fraction form
    12,459.99/17,193.99 = 7,151.07/x
  3. Step 3: Cross multiply
    12,459.99x = 17,193.99 × 7,151.07
  4. Step 4: Simplify right side
    12,459.99x = 122,955,426.07
  5. Step 5: Solve for x
    x = 122,955,426.07/12,459.99
  6. Step 6: Final answer
    x = 9,868.02

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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.