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Finding the Fourth Proportional to 15,817.52, 21,837.04 and 10,789.14

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Solution

The fourth proportional to 15,817.52, 21,837.04 and 10,789.14 is: 14,895.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,817.52 : 21,837.04 = 10,789.14 : x
  2. Step 2: Convert to fraction form
    15,817.52/21,837.04 = 10,789.14/x
  3. Step 3: Cross multiply
    15,817.52x = 21,837.04 × 10,789.14
  4. Step 4: Simplify right side
    15,817.52x = 235,602,881.75
  5. Step 5: Solve for x
    x = 235,602,881.75/15,817.52
  6. Step 6: Final answer
    x = 14,895.06

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1.5x scale

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.