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Finding the Fourth Proportional to 19,603.52, 27,045.70 and 12,892.76

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Solution

The fourth proportional to 19,603.52, 27,045.70 and 12,892.76 is: 17,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.52 : 27,045.70 = 12,892.76 : x
  2. Step 2: Convert to fraction form
    19,603.52/27,045.70 = 12,892.76/x
  3. Step 3: Cross multiply
    19,603.52x = 27,045.70 × 12,892.76
  4. Step 4: Simplify right side
    19,603.52x = 348,693,719.13
  5. Step 5: Solve for x
    x = 348,693,719.13/19,603.52
  6. Step 6: Final answer
    x = 17,787.30

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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.