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Finding the Fourth Proportional to 19,951.95, 29,918.13 and 11,402.40

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Solution

The fourth proportional to 19,951.95, 29,918.13 and 11,402.40 is: 17,098.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.95 : 29,918.13 = 11,402.40 : x
  2. Step 2: Convert to fraction form
    19,951.95/29,918.13 = 11,402.40/x
  3. Step 3: Cross multiply
    19,951.95x = 29,918.13 × 11,402.40
  4. Step 4: Simplify right side
    19,951.95x = 341,138,485.51
  5. Step 5: Solve for x
    x = 341,138,485.51/19,951.95
  6. Step 6: Final answer
    x = 17,098.00

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1.5x scale

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.