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Finding the Fourth Proportional to 19,390.66, 26,703.17 and 18,504.92

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Solution

The fourth proportional to 19,390.66, 26,703.17 and 18,504.92 is: 25,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.66 : 26,703.17 = 18,504.92 : x
  2. Step 2: Convert to fraction form
    19,390.66/26,703.17 = 18,504.92/x
  3. Step 3: Cross multiply
    19,390.66x = 26,703.17 × 18,504.92
  4. Step 4: Simplify right side
    19,390.66x = 494,140,068.22
  5. Step 5: Solve for x
    x = 494,140,068.22/19,390.66
  6. Step 6: Final answer
    x = 25,483.41

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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.