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Finding the Fourth Proportional to 355,712.43, 533,529.34 and 89,473.05

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Solution

The fourth proportional to 355,712.43, 533,529.34 and 89,473.05 is: 134,199.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,712.43 : 533,529.34 = 89,473.05 : x
  2. Step 2: Convert to fraction form
    355,712.43/533,529.34 = 89,473.05/x
  3. Step 3: Cross multiply
    355,712.43x = 533,529.34 × 89,473.05
  4. Step 4: Simplify right side
    355,712.43x = 47,736,497,314.29
  5. Step 5: Solve for x
    x = 47,736,497,314.29/355,712.43
  6. Step 6: Final answer
    x = 134,199.69

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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.