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Finding the Fourth Proportional to 64,645.88, 89,210.43 and 36,351.63

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Solution

The fourth proportional to 64,645.88, 89,210.43 and 36,351.63 is: 50,164.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,645.88 : 89,210.43 = 36,351.63 : x
  2. Step 2: Convert to fraction form
    64,645.88/89,210.43 = 36,351.63/x
  3. Step 3: Cross multiply
    64,645.88x = 89,210.43 × 36,351.63
  4. Step 4: Simplify right side
    64,645.88x = 3,242,944,543.50
  5. Step 5: Solve for x
    x = 3,242,944,543.50/64,645.88
  6. Step 6: Final answer
    x = 50,164.76

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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.