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Finding the Fourth Proportional to 38,681,963.84, 58,002,978.44 and 11,384,719.20

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Solution

The fourth proportional to 38,681,963.84, 58,002,978.44 and 11,384,719.20 is: 17,071,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,681,963.84 : 58,002,978.44 = 11,384,719.20 : x
  2. Step 2: Convert to fraction form
    38,681,963.84/58,002,978.44 = 11,384,719.20/x
  3. Step 3: Cross multiply
    38,681,963.84x = 58,002,978.44 × 11,384,719.20
  4. Step 4: Simplify right side
    38,681,963.84x = 660,347,622,303,054
  5. Step 5: Solve for x
    x = 660,347,622,303,054/38,681,963.84
  6. Step 6: Final answer
    x = 17,071,202.10

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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.