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Finding the Fourth Proportional to 70,907.70, 97,848.20 and 39,076.83

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Solution

The fourth proportional to 70,907.70, 97,848.20 and 39,076.83 is: 53,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.70 : 97,848.20 = 39,076.83 : x
  2. Step 2: Convert to fraction form
    70,907.70/97,848.20 = 39,076.83/x
  3. Step 3: Cross multiply
    70,907.70x = 97,848.20 × 39,076.83
  4. Step 4: Simplify right side
    70,907.70x = 3,823,597,574.90
  5. Step 5: Solve for x
    x = 3,823,597,574.90/70,907.70
  6. Step 6: Final answer
    x = 53,923.58

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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.