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Finding the Fourth Proportional to 216,818.40, 325,146.69 and 74,623.89

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Solution

The fourth proportional to 216,818.40, 325,146.69 and 74,623.89 is: 111,907.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,818.40 : 325,146.69 = 74,623.89 : x
  2. Step 2: Convert to fraction form
    216,818.40/325,146.69 = 74,623.89/x
  3. Step 3: Cross multiply
    216,818.40x = 325,146.69 × 74,623.89
  4. Step 4: Simplify right side
    216,818.40x = 24,263,710,828.42
  5. Step 5: Solve for x
    x = 24,263,710,828.42/216,818.40
  6. Step 6: Final answer
    x = 111,907.99

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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.