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Finding the Fourth Proportional to 70,705.52, 97,573.68 and 38,874.96

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Solution

The fourth proportional to 70,705.52, 97,573.68 and 38,874.96 is: 53,647.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,705.52 : 97,573.68 = 38,874.96 : x
  2. Step 2: Convert to fraction form
    70,705.52/97,573.68 = 38,874.96/x
  3. Step 3: Cross multiply
    70,705.52x = 97,573.68 × 38,874.96
  4. Step 4: Simplify right side
    70,705.52x = 3,793,172,907.05
  5. Step 5: Solve for x
    x = 3,793,172,907.05/70,705.52
  6. Step 6: Final answer
    x = 53,647.48

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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.