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Finding the Fourth Proportional to 617,611.20, 926,330.40 and 196,929.60

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Solution

The fourth proportional to 617,611.20, 926,330.40 and 196,929.60 is: 295,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,611.20 : 926,330.40 = 196,929.60 : x
  2. Step 2: Convert to fraction form
    617,611.20/926,330.40 = 196,929.60/x
  3. Step 3: Cross multiply
    617,611.20x = 926,330.40 × 196,929.60
  4. Step 4: Simplify right side
    617,611.20x = 182,421,875,139.84
  5. Step 5: Solve for x
    x = 182,421,875,139.84/617,611.20
  6. Step 6: Final answer
    x = 295,366.85

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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.