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Finding the Fourth Proportional to 64,951.98, 89,624.12 and 39,445.08

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Solution

The fourth proportional to 64,951.98, 89,624.12 and 39,445.08 is: 54,428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,951.98 : 89,624.12 = 39,445.08 : x
  2. Step 2: Convert to fraction form
    64,951.98/89,624.12 = 39,445.08/x
  3. Step 3: Cross multiply
    64,951.98x = 89,624.12 × 39,445.08
  4. Step 4: Simplify right side
    64,951.98x = 3,535,230,583.33
  5. Step 5: Solve for x
    x = 3,535,230,583.33/64,951.98
  6. Step 6: Final answer
    x = 54,428.37

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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.