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Finding the Fourth Proportional to 316,777.80, 437,153.34 and 189,453.39

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Solution

The fourth proportional to 316,777.80, 437,153.34 and 189,453.39 is: 261,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,777.80 : 437,153.34 = 189,453.39 : x
  2. Step 2: Convert to fraction form
    316,777.80/437,153.34 = 189,453.39/x
  3. Step 3: Cross multiply
    316,777.80x = 437,153.34 × 189,453.39
  4. Step 4: Simplify right side
    316,777.80x = 82,820,182,212.82
  5. Step 5: Solve for x
    x = 82,820,182,212.82/316,777.80
  6. Step 6: Final answer
    x = 261,445.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.