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Finding the Fourth Proportional to 70,985.34, 97,760.43 and 69,435.27

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Solution

The fourth proportional to 70,985.34, 97,760.43 and 69,435.27 is: 95,625.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,985.34 : 97,760.43 = 69,435.27 : x
  2. Step 2: Convert to fraction form
    70,985.34/97,760.43 = 69,435.27/x
  3. Step 3: Cross multiply
    70,985.34x = 97,760.43 × 69,435.27
  4. Step 4: Simplify right side
    70,985.34x = 6,788,021,852.37
  5. Step 5: Solve for x
    x = 6,788,021,852.37/70,985.34
  6. Step 6: Final answer
    x = 95,625.69

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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.