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Finding the Fourth Proportional to 356,200.72, 534,157.48 and 128,431.44

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Solution

The fourth proportional to 356,200.72, 534,157.48 and 128,431.44 is: 192,595.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,200.72 : 534,157.48 = 128,431.44 : x
  2. Step 2: Convert to fraction form
    356,200.72/534,157.48 = 128,431.44/x
  3. Step 3: Cross multiply
    356,200.72x = 534,157.48 × 128,431.44
  4. Step 4: Simplify right side
    356,200.72x = 68,602,614,343.17
  5. Step 5: Solve for x
    x = 68,602,614,343.17/356,200.72
  6. Step 6: Final answer
    x = 192,595.38

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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.