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Finding the Fourth Proportional to 1,459.41, 2,186.07 and 726.76

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Solution

The fourth proportional to 1,459.41, 2,186.07 and 726.76 is: 1,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.41 : 2,186.07 = 726.76 : x
  2. Step 2: Convert to fraction form
    1,459.41/2,186.07 = 726.76/x
  3. Step 3: Cross multiply
    1,459.41x = 2,186.07 × 726.76
  4. Step 4: Simplify right side
    1,459.41x = 1,588,748.23
  5. Step 5: Solve for x
    x = 1,588,748.23/1,459.41
  6. Step 6: Final answer
    x = 1,088.62

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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.