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Finding the Fourth Proportional to 453,681.30, 680,489.15 and 216,960.42

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Solution

The fourth proportional to 453,681.30, 680,489.15 and 216,960.42 is: 325,424.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,681.30 : 680,489.15 = 216,960.42 : x
  2. Step 2: Convert to fraction form
    453,681.30/680,489.15 = 216,960.42/x
  3. Step 3: Cross multiply
    453,681.30x = 680,489.15 × 216,960.42
  4. Step 4: Simplify right side
    453,681.30x = 147,639,210,704.64
  5. Step 5: Solve for x
    x = 147,639,210,704.64/453,681.30
  6. Step 6: Final answer
    x = 325,424.94

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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.