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Finding the Fourth Proportional to 64,706.98, 97,064.66 and 20,335.59

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Solution

The fourth proportional to 64,706.98, 97,064.66 and 20,335.59 is: 30,504.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,706.98 : 97,064.66 = 20,335.59 : x
  2. Step 2: Convert to fraction form
    64,706.98/97,064.66 = 20,335.59/x
  3. Step 3: Cross multiply
    64,706.98x = 97,064.66 × 20,335.59
  4. Step 4: Simplify right side
    64,706.98x = 1,973,866,542.25
  5. Step 5: Solve for x
    x = 1,973,866,542.25/64,706.98
  6. Step 6: Final answer
    x = 30,504.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.