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Finding the Fourth Proportional to 64,961.80, 89,622.12 and 38,094.50

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Solution

The fourth proportional to 64,961.80, 89,622.12 and 38,094.50 is: 52,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,961.80 : 89,622.12 = 38,094.50 : x
  2. Step 2: Convert to fraction form
    64,961.80/89,622.12 = 38,094.50/x
  3. Step 3: Cross multiply
    64,961.80x = 89,622.12 × 38,094.50
  4. Step 4: Simplify right side
    64,961.80x = 3,414,110,110.11
  5. Step 5: Solve for x
    x = 3,414,110,110.11/64,961.80
  6. Step 6: Final answer
    x = 52,555.66

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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.