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Finding the Fourth Proportional to 17,778,837.60, 26,668,256.40 and 12,039,274.80

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Solution

The fourth proportional to 17,778,837.60, 26,668,256.40 and 12,039,274.80 is: 18,058,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778,837.60 : 26,668,256.40 = 12,039,274.80 : x
  2. Step 2: Convert to fraction form
    17,778,837.60/26,668,256.40 = 12,039,274.80/x
  3. Step 3: Cross multiply
    17,778,837.60x = 26,668,256.40 × 12,039,274.80
  4. Step 4: Simplify right side
    17,778,837.60x = 321,066,467,236,458.75
  5. Step 5: Solve for x
    x = 321,066,467,236,458.75/17,778,837.60
  6. Step 6: Final answer
    x = 18,058,912.20

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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.