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Finding the Fourth Proportional to 113,863.40, 157,058.18 and 69,151.40

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Solution

The fourth proportional to 113,863.40, 157,058.18 and 69,151.40 is: 95,384.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,863.40 : 157,058.18 = 69,151.40 : x
  2. Step 2: Convert to fraction form
    113,863.40/157,058.18 = 69,151.40/x
  3. Step 3: Cross multiply
    113,863.40x = 157,058.18 × 69,151.40
  4. Step 4: Simplify right side
    113,863.40x = 10,860,793,028.45
  5. Step 5: Solve for x
    x = 10,860,793,028.45/113,863.40
  6. Step 6: Final answer
    x = 95,384.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.