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Finding the Fourth Proportional to 42,893.92, 64,343.70 and 14,816.68

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Solution

The fourth proportional to 42,893.92, 64,343.70 and 14,816.68 is: 22,225.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,893.92 : 64,343.70 = 14,816.68 : x
  2. Step 2: Convert to fraction form
    42,893.92/64,343.70 = 14,816.68/x
  3. Step 3: Cross multiply
    42,893.92x = 64,343.70 × 14,816.68
  4. Step 4: Simplify right side
    42,893.92x = 953,360,012.92
  5. Step 5: Solve for x
    x = 953,360,012.92/42,893.92
  6. Step 6: Final answer
    x = 22,225.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.