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Finding the Fourth Proportional to 504,825.51, 696,916.31 and 389,846.01

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Solution

The fourth proportional to 504,825.51, 696,916.31 and 389,846.01 is: 538,186.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,825.51 : 696,916.31 = 389,846.01 : x
  2. Step 2: Convert to fraction form
    504,825.51/696,916.31 = 389,846.01/x
  3. Step 3: Cross multiply
    504,825.51x = 696,916.31 × 389,846.01
  4. Step 4: Simplify right side
    504,825.51x = 271,690,043,421.63
  5. Step 5: Solve for x
    x = 271,690,043,421.63/504,825.51
  6. Step 6: Final answer
    x = 538,186.04

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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.