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Finding the Fourth Proportional to 216,554.64, 324,869.04 and 74,393.16

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Solution

The fourth proportional to 216,554.64, 324,869.04 and 74,393.16 is: 111,602.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,554.64 : 324,869.04 = 74,393.16 : x
  2. Step 2: Convert to fraction form
    216,554.64/324,869.04 = 74,393.16/x
  3. Step 3: Cross multiply
    216,554.64x = 324,869.04 × 74,393.16
  4. Step 4: Simplify right side
    216,554.64x = 24,168,034,471.77
  5. Step 5: Solve for x
    x = 24,168,034,471.77/216,554.64
  6. Step 6: Final answer
    x = 111,602.48

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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.