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Finding the Fourth Proportional to 70,897.54, 97,837.56 and 40,682.20

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Solution

The fourth proportional to 70,897.54, 97,837.56 and 40,682.20 is: 56,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,897.54 : 97,837.56 = 40,682.20 : x
  2. Step 2: Convert to fraction form
    70,897.54/97,837.56 = 40,682.20/x
  3. Step 3: Cross multiply
    70,897.54x = 97,837.56 × 40,682.20
  4. Step 4: Simplify right side
    70,897.54x = 3,980,247,183.43
  5. Step 5: Solve for x
    x = 3,980,247,183.43/70,897.54
  6. Step 6: Final answer
    x = 56,140.84

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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.