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Finding the Fourth Proportional to 355,570.52, 533,356.30 and 145,208.46

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Solution

The fourth proportional to 355,570.52, 533,356.30 and 145,208.46 is: 217,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,570.52 : 533,356.30 = 145,208.46 : x
  2. Step 2: Convert to fraction form
    355,570.52/533,356.30 = 145,208.46/x
  3. Step 3: Cross multiply
    355,570.52x = 533,356.30 × 145,208.46
  4. Step 4: Simplify right side
    355,570.52x = 77,447,846,954.30
  5. Step 5: Solve for x
    x = 77,447,846,954.30/355,570.52
  6. Step 6: Final answer
    x = 217,812.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.