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Finding the Fourth Proportional to 611,672.10, 915,758.55 and 611,672.10

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Solution

The fourth proportional to 611,672.10, 915,758.55 and 611,672.10 is: 915,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,672.10 : 915,758.55 = 611,672.10 : x
  2. Step 2: Convert to fraction form
    611,672.10/915,758.55 = 611,672.10/x
  3. Step 3: Cross multiply
    611,672.10x = 915,758.55 × 611,672.10
  4. Step 4: Simplify right side
    611,672.10x = 560,143,955,371.46
  5. Step 5: Solve for x
    x = 560,143,955,371.46/611,672.10
  6. Step 6: Final answer
    x = 915,758.55

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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.