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Finding the Fourth Proportional to 411,944.60, 617,916.90 and 146,005.40

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Solution

The fourth proportional to 411,944.60, 617,916.90 and 146,005.40 is: 219,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,944.60 : 617,916.90 = 146,005.40 : x
  2. Step 2: Convert to fraction form
    411,944.60/617,916.90 = 146,005.40/x
  3. Step 3: Cross multiply
    411,944.60x = 617,916.90 × 146,005.40
  4. Step 4: Simplify right side
    411,944.60x = 90,219,204,151.26
  5. Step 5: Solve for x
    x = 90,219,204,151.26/411,944.60
  6. Step 6: Final answer
    x = 219,008.10

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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.