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Finding the Fourth Proportional to 17,778,839.10, 26,668,258.65 and 12,039,276.30

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Solution

The fourth proportional to 17,778,839.10, 26,668,258.65 and 12,039,276.30 is: 18,058,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778,839.10 : 26,668,258.65 = 12,039,276.30 : x
  2. Step 2: Convert to fraction form
    17,778,839.10/26,668,258.65 = 12,039,276.30/x
  3. Step 3: Cross multiply
    17,778,839.10x = 26,668,258.65 × 12,039,276.30
  4. Step 4: Simplify right side
    17,778,839.10x = 321,066,534,327,215
  5. Step 5: Solve for x
    x = 321,066,534,327,215/17,778,839.10
  6. Step 6: Final answer
    x = 18,058,914.45

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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.