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Finding the Fourth Proportional to 64,951.31, 89,623.19 and 39,444.38

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Solution

The fourth proportional to 64,951.31, 89,623.19 and 39,444.38 is: 54,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,951.31 : 89,623.19 = 39,444.38 : x
  2. Step 2: Convert to fraction form
    64,951.31/89,623.19 = 39,444.38/x
  3. Step 3: Cross multiply
    64,951.31x = 89,623.19 × 39,444.38
  4. Step 4: Simplify right side
    64,951.31x = 3,535,131,163.17
  5. Step 5: Solve for x
    x = 3,535,131,163.17/64,951.31
  6. Step 6: Final answer
    x = 54,427.40

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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.