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Finding the Fourth Proportional to 355,708.88, 533,564.22 and 145,346.82

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Solution

The fourth proportional to 355,708.88, 533,564.22 and 145,346.82 is: 218,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,708.88 : 533,564.22 = 145,346.82 : x
  2. Step 2: Convert to fraction form
    355,708.88/533,564.22 = 145,346.82/x
  3. Step 3: Cross multiply
    355,708.88x = 533,564.22 × 145,346.82
  4. Step 4: Simplify right side
    355,708.88x = 77,551,862,642.78
  5. Step 5: Solve for x
    x = 77,551,862,642.78/355,708.88
  6. Step 6: Final answer
    x = 218,020.60

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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.