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Finding the Fourth Proportional to 70,710.08, 97,580.64 and 38,879.60

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Solution

The fourth proportional to 70,710.08, 97,580.64 and 38,879.60 is: 53,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,710.08 : 97,580.64 = 38,879.60 : x
  2. Step 2: Convert to fraction form
    70,710.08/97,580.64 = 38,879.60/x
  3. Step 3: Cross multiply
    70,710.08x = 97,580.64 × 38,879.60
  4. Step 4: Simplify right side
    70,710.08x = 3,793,896,250.94
  5. Step 5: Solve for x
    x = 3,793,896,250.94/70,710.08
  6. Step 6: Final answer
    x = 53,654.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.