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Finding the Fourth Proportional to 529,665, 730,937.70 and 291,201

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Solution

The fourth proportional to 529,665, 730,937.70 and 291,201 is: 401,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,665 : 730,937.70 = 291,201 : x
  2. Step 2: Convert to fraction form
    529,665/730,937.70 = 291,201/x
  3. Step 3: Cross multiply
    529,665x = 730,937.70 × 291,201
  4. Step 4: Simplify right side
    529,665x = 212,849,789,177.70
  5. Step 5: Solve for x
    x = 212,849,789,177.70/529,665
  6. Step 6: Final answer
    x = 401,857.38

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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.