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Finding the Fourth Proportional to 19,193.66, 28,802.79 and 13,253.22

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Solution

The fourth proportional to 19,193.66, 28,802.79 and 13,253.22 is: 19,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,193.66 : 28,802.79 = 13,253.22 : x
  2. Step 2: Convert to fraction form
    19,193.66/28,802.79 = 13,253.22/x
  3. Step 3: Cross multiply
    19,193.66x = 28,802.79 × 13,253.22
  4. Step 4: Simplify right side
    19,193.66x = 381,729,712.48
  5. Step 5: Solve for x
    x = 381,729,712.48/19,193.66
  6. Step 6: Final answer
    x = 19,888.32

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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.