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Finding the Fourth Proportional to 19,159.68, 26,440.20 and 10,776

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Solution

The fourth proportional to 19,159.68, 26,440.20 and 10,776 is: 14,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.68 : 26,440.20 = 10,776 : x
  2. Step 2: Convert to fraction form
    19,159.68/26,440.20 = 10,776/x
  3. Step 3: Cross multiply
    19,159.68x = 26,440.20 × 10,776
  4. Step 4: Simplify right side
    19,159.68x = 284,919,595.20
  5. Step 5: Solve for x
    x = 284,919,595.20/19,159.68
  6. Step 6: Final answer
    x = 14,870.79

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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.