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Finding the Fourth Proportional to 22,492.80, 31,042.80 and 13,061.36

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Solution

The fourth proportional to 22,492.80, 31,042.80 and 13,061.36 is: 18,026.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,492.80 : 31,042.80 = 13,061.36 : x
  2. Step 2: Convert to fraction form
    22,492.80/31,042.80 = 13,061.36/x
  3. Step 3: Cross multiply
    22,492.80x = 31,042.80 × 13,061.36
  4. Step 4: Simplify right side
    22,492.80x = 405,461,186.21
  5. Step 5: Solve for x
    x = 405,461,186.21/22,492.80
  6. Step 6: Final answer
    x = 18,026.27

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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.