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Finding the Fourth Proportional to 529,485.24, 730,689.42 and 291,021.24

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Solution

The fourth proportional to 529,485.24, 730,689.42 and 291,021.24 is: 401,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,485.24 : 730,689.42 = 291,021.24 : x
  2. Step 2: Convert to fraction form
    529,485.24/730,689.42 = 291,021.24/x
  3. Step 3: Cross multiply
    529,485.24x = 730,689.42 × 291,021.24
  4. Step 4: Simplify right side
    529,485.24x = 212,646,141,063.28
  5. Step 5: Solve for x
    x = 212,646,141,063.28/529,485.24
  6. Step 6: Final answer
    x = 401,609.20

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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.