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Finding the Fourth Proportional to 411,809.60, 617,714.40 and 175,092.80

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Solution

The fourth proportional to 411,809.60, 617,714.40 and 175,092.80 is: 262,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,809.60 : 617,714.40 = 175,092.80 : x
  2. Step 2: Convert to fraction form
    411,809.60/617,714.40 = 175,092.80/x
  3. Step 3: Cross multiply
    411,809.60x = 617,714.40 × 175,092.80
  4. Step 4: Simplify right side
    411,809.60x = 108,157,343,896.32
  5. Step 5: Solve for x
    x = 108,157,343,896.32/411,809.60
  6. Step 6: Final answer
    x = 262,639.20

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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.