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Finding the Fourth Proportional to 14,531.23, 21,802.13 and 8,978.18

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Solution

The fourth proportional to 14,531.23, 21,802.13 and 8,978.18 is: 13,470.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,531.23 : 21,802.13 = 8,978.18 : x
  2. Step 2: Convert to fraction form
    14,531.23/21,802.13 = 8,978.18/x
  3. Step 3: Cross multiply
    14,531.23x = 21,802.13 × 8,978.18
  4. Step 4: Simplify right side
    14,531.23x = 195,743,402.63
  5. Step 5: Solve for x
    x = 195,743,402.63/14,531.23
  6. Step 6: Final answer
    x = 13,470.54

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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.