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Finding the Fourth Proportional to 85,596.90, 128,385.63 and 33,001.98

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Solution

The fourth proportional to 85,596.90, 128,385.63 and 33,001.98 is: 49,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,596.90 : 128,385.63 = 33,001.98 : x
  2. Step 2: Convert to fraction form
    85,596.90/128,385.63 = 33,001.98/x
  3. Step 3: Cross multiply
    85,596.90x = 128,385.63 × 33,001.98
  4. Step 4: Simplify right side
    85,596.90x = 4,236,979,993.55
  5. Step 5: Solve for x
    x = 4,236,979,993.55/85,596.90
  6. Step 6: Final answer
    x = 49,499.22

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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.