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Finding the Fourth Proportional to 404,437.60, 606,656.40 and 271,381.60

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Solution

The fourth proportional to 404,437.60, 606,656.40 and 271,381.60 is: 407,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,437.60 : 606,656.40 = 271,381.60 : x
  2. Step 2: Convert to fraction form
    404,437.60/606,656.40 = 271,381.60/x
  3. Step 3: Cross multiply
    404,437.60x = 606,656.40 × 271,381.60
  4. Step 4: Simplify right side
    404,437.60x = 164,635,384,482.24
  5. Step 5: Solve for x
    x = 164,635,384,482.24/404,437.60
  6. Step 6: Final answer
    x = 407,072.40

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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.