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Finding the Fourth Proportional to 13,696,722.23, 20,512,471.53 and 7,927,306.88

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Solution

The fourth proportional to 13,696,722.23, 20,512,471.53 and 7,927,306.88 is: 11,872,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696,722.23 : 20,512,471.53 = 7,927,306.88 : x
  2. Step 2: Convert to fraction form
    13,696,722.23/20,512,471.53 = 7,927,306.88/x
  3. Step 3: Cross multiply
    13,696,722.23x = 20,512,471.53 × 7,927,306.88
  4. Step 4: Simplify right side
    13,696,722.23x = 162,608,656,685,573.12
  5. Step 5: Solve for x
    x = 162,608,656,685,573.12/13,696,722.23
  6. Step 6: Final answer
    x = 11,872,085.45

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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.