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Finding the Fourth Proportional to 12,261.13, 16,920.35 and 7,293.13

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Solution

The fourth proportional to 12,261.13, 16,920.35 and 7,293.13 is: 10,064.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.13 : 16,920.35 = 7,293.13 : x
  2. Step 2: Convert to fraction form
    12,261.13/16,920.35 = 7,293.13/x
  3. Step 3: Cross multiply
    12,261.13x = 16,920.35 × 7,293.13
  4. Step 4: Simplify right side
    12,261.13x = 123,402,245.83
  5. Step 5: Solve for x
    x = 123,402,245.83/12,261.13
  6. Step 6: Final answer
    x = 10,064.51

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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.