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Finding the Fourth Proportional to 64,967.30, 89,648.55 and 36,284.68

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Solution

The fourth proportional to 64,967.30, 89,648.55 and 36,284.68 is: 50,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,967.30 : 89,648.55 = 36,284.68 : x
  2. Step 2: Convert to fraction form
    64,967.30/89,648.55 = 36,284.68/x
  3. Step 3: Cross multiply
    64,967.30x = 89,648.55 × 36,284.68
  4. Step 4: Simplify right side
    64,967.30x = 3,252,869,211.36
  5. Step 5: Solve for x
    x = 3,252,869,211.36/64,967.30
  6. Step 6: Final answer
    x = 50,069.33

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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.