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Finding the Fourth Proportional to 70,848.68, 97,770.72 and 39,017.36

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Solution

The fourth proportional to 70,848.68, 97,770.72 and 39,017.36 is: 53,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,848.68 : 97,770.72 = 39,017.36 : x
  2. Step 2: Convert to fraction form
    70,848.68/97,770.72 = 39,017.36/x
  3. Step 3: Cross multiply
    70,848.68x = 97,770.72 × 39,017.36
  4. Step 4: Simplify right side
    70,848.68x = 3,814,755,379.70
  5. Step 5: Solve for x
    x = 3,814,755,379.70/70,848.68
  6. Step 6: Final answer
    x = 53,843.70

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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.