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Finding the Fourth Proportional to 19,957.86, 27,543.80 and 14,913.32

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Solution

The fourth proportional to 19,957.86, 27,543.80 and 14,913.32 is: 20,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.86 : 27,543.80 = 14,913.32 : x
  2. Step 2: Convert to fraction form
    19,957.86/27,543.80 = 14,913.32/x
  3. Step 3: Cross multiply
    19,957.86x = 27,543.80 × 14,913.32
  4. Step 4: Simplify right side
    19,957.86x = 410,769,402.98
  5. Step 5: Solve for x
    x = 410,769,402.98/19,957.86
  6. Step 6: Final answer
    x = 20,581.84

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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.