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Finding the Fourth Proportional to 70,409.73, 97,167.69 and 38,580.66

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Solution

The fourth proportional to 70,409.73, 97,167.69 and 38,580.66 is: 53,242.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,409.73 : 97,167.69 = 38,580.66 : x
  2. Step 2: Convert to fraction form
    70,409.73/97,167.69 = 38,580.66/x
  3. Step 3: Cross multiply
    70,409.73x = 97,167.69 × 38,580.66
  4. Step 4: Simplify right side
    70,409.73x = 3,748,793,610.88
  5. Step 5: Solve for x
    x = 3,748,793,610.88/70,409.73
  6. Step 6: Final answer
    x = 53,242.55

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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.