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Finding the Fourth Proportional to 69,699.54, 96,190.11 and 39,485.10

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Solution

The fourth proportional to 69,699.54, 96,190.11 and 39,485.10 is: 54,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,699.54 : 96,190.11 = 39,485.10 : x
  2. Step 2: Convert to fraction form
    69,699.54/96,190.11 = 39,485.10/x
  3. Step 3: Cross multiply
    69,699.54x = 96,190.11 × 39,485.10
  4. Step 4: Simplify right side
    69,699.54x = 3,798,076,112.36
  5. Step 5: Solve for x
    x = 3,798,076,112.36/69,699.54
  6. Step 6: Final answer
    x = 54,492.13

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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.