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Finding the Fourth Proportional to 70,929.92, 97,855.82 and 40,704.32

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Solution

The fourth proportional to 70,929.92, 97,855.82 and 40,704.32 is: 56,156.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,929.92 : 97,855.82 = 40,704.32 : x
  2. Step 2: Convert to fraction form
    70,929.92/97,855.82 = 40,704.32/x
  3. Step 3: Cross multiply
    70,929.92x = 97,855.82 × 40,704.32
  4. Step 4: Simplify right side
    70,929.92x = 3,983,154,611.14
  5. Step 5: Solve for x
    x = 3,983,154,611.14/70,929.92
  6. Step 6: Final answer
    x = 56,156.20

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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.