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Finding the Fourth Proportional to 64,279.28, 88,706.40 and 38,786.96

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Solution

The fourth proportional to 64,279.28, 88,706.40 and 38,786.96 is: 53,526.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,279.28 : 88,706.40 = 38,786.96 : x
  2. Step 2: Convert to fraction form
    64,279.28/88,706.40 = 38,786.96/x
  3. Step 3: Cross multiply
    64,279.28x = 88,706.40 × 38,786.96
  4. Step 4: Simplify right side
    64,279.28x = 3,440,651,588.54
  5. Step 5: Solve for x
    x = 3,440,651,588.54/64,279.28
  6. Step 6: Final answer
    x = 53,526.60

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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.