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Finding the Fourth Proportional to 85,599.40, 128,389.38 and 33,004.48

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Solution

The fourth proportional to 85,599.40, 128,389.38 and 33,004.48 is: 49,502.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,599.40 : 128,389.38 = 33,004.48 : x
  2. Step 2: Convert to fraction form
    85,599.40/128,389.38 = 33,004.48/x
  3. Step 3: Cross multiply
    85,599.40x = 128,389.38 × 33,004.48
  4. Step 4: Simplify right side
    85,599.40x = 4,237,424,724.42
  5. Step 5: Solve for x
    x = 4,237,424,724.42/85,599.40
  6. Step 6: Final answer
    x = 49,502.97

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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.