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Finding the Fourth Proportional to 17,378.79, 26,068.18 and 15,031.82

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Solution

The fourth proportional to 17,378.79, 26,068.18 and 15,031.82 is: 22,547.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,378.79 : 26,068.18 = 15,031.82 : x
  2. Step 2: Convert to fraction form
    17,378.79/26,068.18 = 15,031.82/x
  3. Step 3: Cross multiply
    17,378.79x = 26,068.18 × 15,031.82
  4. Step 4: Simplify right side
    17,378.79x = 391,852,189.49
  5. Step 5: Solve for x
    x = 391,852,189.49/17,378.79
  6. Step 6: Final answer
    x = 22,547.73

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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.