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Finding the Fourth Proportional to 70,902.21, 97,859.17 and 40,707.93

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Solution

The fourth proportional to 70,902.21, 97,859.17 and 40,707.93 is: 56,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.21 : 97,859.17 = 40,707.93 : x
  2. Step 2: Convert to fraction form
    70,902.21/97,859.17 = 40,707.93/x
  3. Step 3: Cross multiply
    70,902.21x = 97,859.17 × 40,707.93
  4. Step 4: Simplify right side
    70,902.21x = 3,983,644,242.22
  5. Step 5: Solve for x
    x = 3,983,644,242.22/70,902.21
  6. Step 6: Final answer
    x = 56,185.05

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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.