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Finding the Fourth Proportional to 19,703.90, 27,194.90 and 11,746.63

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Solution

The fourth proportional to 19,703.90, 27,194.90 and 11,746.63 is: 16,212.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.90 : 27,194.90 = 11,746.63 : x
  2. Step 2: Convert to fraction form
    19,703.90/27,194.90 = 11,746.63/x
  3. Step 3: Cross multiply
    19,703.90x = 27,194.90 × 11,746.63
  4. Step 4: Simplify right side
    19,703.90x = 319,448,428.19
  5. Step 5: Solve for x
    x = 319,448,428.19/19,703.90
  6. Step 6: Final answer
    x = 16,212.45

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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.