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Finding the Fourth Proportional to 27,773,420.70, 38,787,129.60 and 27,773,420.70

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Solution

The fourth proportional to 27,773,420.70, 38,787,129.60 and 27,773,420.70 is: 38,787,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,773,420.70 : 38,787,129.60 = 27,773,420.70 : x
  2. Step 2: Convert to fraction form
    27,773,420.70/38,787,129.60 = 27,773,420.70/x
  3. Step 3: Cross multiply
    27,773,420.70x = 38,787,129.60 × 27,773,420.70
  4. Step 4: Simplify right side
    27,773,420.70x = 1,077,251,268,126,222.75
  5. Step 5: Solve for x
    x = 1,077,251,268,126,222.75/27,773,420.70
  6. Step 6: Final answer
    x = 38,787,129.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.