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Finding the Fourth Proportional to 407,810.60, 611,934.60 and 171,177.20

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Solution

The fourth proportional to 407,810.60, 611,934.60 and 171,177.20 is: 256,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,810.60 : 611,934.60 = 171,177.20 : x
  2. Step 2: Convert to fraction form
    407,810.60/611,934.60 = 171,177.20/x
  3. Step 3: Cross multiply
    407,810.60x = 611,934.60 × 171,177.20
  4. Step 4: Simplify right side
    407,810.60x = 104,749,251,411.12
  5. Step 5: Solve for x
    x = 104,749,251,411.12/407,810.60
  6. Step 6: Final answer
    x = 256,857.60

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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.