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Finding the Fourth Proportional to 52,980.84, 79,478.64 and 17,911.08

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Solution

The fourth proportional to 52,980.84, 79,478.64 and 17,911.08 is: 26,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,980.84 : 79,478.64 = 17,911.08 : x
  2. Step 2: Convert to fraction form
    52,980.84/79,478.64 = 17,911.08/x
  3. Step 3: Cross multiply
    52,980.84x = 79,478.64 × 17,911.08
  4. Step 4: Simplify right side
    52,980.84x = 1,423,548,279.33
  5. Step 5: Solve for x
    x = 1,423,548,279.33/52,980.84
  6. Step 6: Final answer
    x = 26,869.11

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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.