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Finding the Fourth Proportional to 411,895.96, 617,724.60 and 123,695.98

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Solution

The fourth proportional to 411,895.96, 617,724.60 and 123,695.98 is: 185,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,895.96 : 617,724.60 = 123,695.98 : x
  2. Step 2: Convert to fraction form
    411,895.96/617,724.60 = 123,695.98/x
  3. Step 3: Cross multiply
    411,895.96x = 617,724.60 × 123,695.98
  4. Step 4: Simplify right side
    411,895.96x = 76,410,049,767.11
  5. Step 5: Solve for x
    x = 76,410,049,767.11/411,895.96
  6. Step 6: Final answer
    x = 185,508.13

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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.