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Finding the Fourth Proportional to 70,907.80, 97,848.12 and 39,076.69

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Solution

The fourth proportional to 70,907.80, 97,848.12 and 39,076.69 is: 53,923.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.80 : 97,848.12 = 39,076.69 : x
  2. Step 2: Convert to fraction form
    70,907.80/97,848.12 = 39,076.69/x
  3. Step 3: Cross multiply
    70,907.80x = 97,848.12 × 39,076.69
  4. Step 4: Simplify right side
    70,907.80x = 3,823,580,652.32
  5. Step 5: Solve for x
    x = 3,823,580,652.32/70,907.80
  6. Step 6: Final answer
    x = 53,923.27

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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.