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Finding the Fourth Proportional to 521,333.42, 719,405.30 and 291,851.96

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Solution

The fourth proportional to 521,333.42, 719,405.30 and 291,851.96 is: 402,736.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,333.42 : 719,405.30 = 291,851.96 : x
  2. Step 2: Convert to fraction form
    521,333.42/719,405.30 = 291,851.96/x
  3. Step 3: Cross multiply
    521,333.42x = 719,405.30 × 291,851.96
  4. Step 4: Simplify right side
    521,333.42x = 209,959,846,376.98
  5. Step 5: Solve for x
    x = 209,959,846,376.98/521,333.42
  6. Step 6: Final answer
    x = 402,736.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.