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Finding the Fourth Proportional to 64,954.98, 89,628.26 and 39,448.08

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Solution

The fourth proportional to 64,954.98, 89,628.26 and 39,448.08 is: 54,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,954.98 : 89,628.26 = 39,448.08 : x
  2. Step 2: Convert to fraction form
    64,954.98/89,628.26 = 39,448.08/x
  3. Step 3: Cross multiply
    64,954.98x = 89,628.26 × 39,448.08
  4. Step 4: Simplify right side
    64,954.98x = 3,535,662,770.74
  5. Step 5: Solve for x
    x = 3,535,662,770.74/64,954.98
  6. Step 6: Final answer
    x = 54,432.51

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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.