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Finding the Fourth Proportional to 64,987.99, 89,680.21 and 36,301.96

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Solution

The fourth proportional to 64,987.99, 89,680.21 and 36,301.96 is: 50,094.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.99 : 89,680.21 = 36,301.96 : x
  2. Step 2: Convert to fraction form
    64,987.99/89,680.21 = 36,301.96/x
  3. Step 3: Cross multiply
    64,987.99x = 89,680.21 × 36,301.96
  4. Step 4: Simplify right side
    64,987.99x = 3,255,567,117.30
  5. Step 5: Solve for x
    x = 3,255,567,117.30/64,987.99
  6. Step 6: Final answer
    x = 50,094.91

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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.