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Finding the Fourth Proportional to 18,368.94, 27,554.13 and 5,222.46

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Solution

The fourth proportional to 18,368.94, 27,554.13 and 5,222.46 is: 7,833.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.94 : 27,554.13 = 5,222.46 : x
  2. Step 2: Convert to fraction form
    18,368.94/27,554.13 = 5,222.46/x
  3. Step 3: Cross multiply
    18,368.94x = 27,554.13 × 5,222.46
  4. Step 4: Simplify right side
    18,368.94x = 143,900,341.76
  5. Step 5: Solve for x
    x = 143,900,341.76/18,368.94
  6. Step 6: Final answer
    x = 7,833.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.