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Finding the Fourth Proportional to 70,242.56, 96,985.44 and 43,421.84

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Solution

The fourth proportional to 70,242.56, 96,985.44 and 43,421.84 is: 59,953.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,242.56 : 96,985.44 = 43,421.84 : x
  2. Step 2: Convert to fraction form
    70,242.56/96,985.44 = 43,421.84/x
  3. Step 3: Cross multiply
    70,242.56x = 96,985.44 × 43,421.84
  4. Step 4: Simplify right side
    70,242.56x = 4,211,286,258.01
  5. Step 5: Solve for x
    x = 4,211,286,258.01/70,242.56
  6. Step 6: Final answer
    x = 59,953.48

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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.