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Finding the Fourth Proportional to 529,528.95, 730,754.85 and 287,812.11

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Solution

The fourth proportional to 529,528.95, 730,754.85 and 287,812.11 is: 397,183.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,528.95 : 730,754.85 = 287,812.11 : x
  2. Step 2: Convert to fraction form
    529,528.95/730,754.85 = 287,812.11/x
  3. Step 3: Cross multiply
    529,528.95x = 730,754.85 × 287,812.11
  4. Step 4: Simplify right side
    529,528.95x = 210,320,095,271.23
  5. Step 5: Solve for x
    x = 210,320,095,271.23/529,528.95
  6. Step 6: Final answer
    x = 397,183.37

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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.