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Finding the Fourth Proportional to 11,164.68, 15,417.63 and 7,192.68

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Solution

The fourth proportional to 11,164.68, 15,417.63 and 7,192.68 is: 9,932.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.68 : 15,417.63 = 7,192.68 : x
  2. Step 2: Convert to fraction form
    11,164.68/15,417.63 = 7,192.68/x
  3. Step 3: Cross multiply
    11,164.68x = 15,417.63 × 7,192.68
  4. Step 4: Simplify right side
    11,164.68x = 110,894,078.95
  5. Step 5: Solve for x
    x = 110,894,078.95/11,164.68
  6. Step 6: Final answer
    x = 9,932.58

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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.