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Finding the Fourth Proportional to 916,706.84, 1,375,154.22 and 317,667.56

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Solution

The fourth proportional to 916,706.84, 1,375,154.22 and 317,667.56 is: 476,533.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,706.84 : 1,375,154.22 = 317,667.56 : x
  2. Step 2: Convert to fraction form
    916,706.84/1,375,154.22 = 317,667.56/x
  3. Step 3: Cross multiply
    916,706.84x = 1,375,154.22 × 317,667.56
  4. Step 4: Simplify right side
    916,706.84x = 436,841,885,691.10
  5. Step 5: Solve for x
    x = 436,841,885,691.10/916,706.84
  6. Step 6: Final answer
    x = 476,533.90

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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.