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Finding the Fourth Proportional to 19,503.68, 29,274.72 and 14,294.72

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Solution

The fourth proportional to 19,503.68, 29,274.72 and 14,294.72 is: 21,456.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,503.68 : 29,274.72 = 14,294.72 : x
  2. Step 2: Convert to fraction form
    19,503.68/29,274.72 = 14,294.72/x
  3. Step 3: Cross multiply
    19,503.68x = 29,274.72 × 14,294.72
  4. Step 4: Simplify right side
    19,503.68x = 418,473,925.48
  5. Step 5: Solve for x
    x = 418,473,925.48/19,503.68
  6. Step 6: Final answer
    x = 21,456.15

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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.