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Finding the Fourth Proportional to 355,721.31, 533,582.62 and 89,480.01

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Solution

The fourth proportional to 355,721.31, 533,582.62 and 89,480.01 is: 134,220.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,721.31 : 533,582.62 = 89,480.01 : x
  2. Step 2: Convert to fraction form
    355,721.31/533,582.62 = 89,480.01/x
  3. Step 3: Cross multiply
    355,721.31x = 533,582.62 × 89,480.01
  4. Step 4: Simplify right side
    355,721.31x = 47,744,978,173.43
  5. Step 5: Solve for x
    x = 47,744,978,173.43/355,721.31
  6. Step 6: Final answer
    x = 134,220.18

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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.