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Finding the Fourth Proportional to 69,701.49, 96,186.96 and 39,486.60

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Solution

The fourth proportional to 69,701.49, 96,186.96 and 39,486.60 is: 54,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,701.49 : 96,186.96 = 39,486.60 : x
  2. Step 2: Convert to fraction form
    69,701.49/96,186.96 = 39,486.60/x
  3. Step 3: Cross multiply
    69,701.49x = 96,186.96 × 39,486.60
  4. Step 4: Simplify right side
    69,701.49x = 3,798,096,014.74
  5. Step 5: Solve for x
    x = 3,798,096,014.74/69,701.49
  6. Step 6: Final answer
    x = 54,490.89

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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.