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Finding the Fourth Proportional to 356,445.77, 534,627.05 and 143,205.07

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Solution

The fourth proportional to 356,445.77, 534,627.05 and 143,205.07 is: 214,790.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,445.77 : 534,627.05 = 143,205.07 : x
  2. Step 2: Convert to fraction form
    356,445.77/534,627.05 = 143,205.07/x
  3. Step 3: Cross multiply
    356,445.77x = 534,627.05 × 143,205.07
  4. Step 4: Simplify right side
    356,445.77x = 76,561,300,729.98
  5. Step 5: Solve for x
    x = 76,561,300,729.98/356,445.77
  6. Step 6: Final answer
    x = 214,790.88

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1.5x scale

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.